Definition of jam Jam
/ʤæˈm/ - [jatm] - jam
We found 44 definitions of jam from 9 different sources.
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What does jam mean?
WordNet
NounPlural: jams |
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| jam - preserve of crushed fruit | ||
| conserve, conserves, preserves, preserve fruit preserved by cooking with sugar | ||
| jam - deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems | ||
| jamming, electronic jamming | ||
| ecm, electronic countermeasures electronic warfare undertaken to prevent or reduce an enemy's effective use of the electromagnetic spectrum | ||
| barrage jamming electronic jamming over a wide range of frequencies simultaneously | ||
| jam - a dense crowd of people | ||
| crush, press | ||
| crowd a large number of things or people considered together; "a crowd of insects assembled around the flowers" | ||
| jam - informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage" | ||
| fix, hole, mess, muddle, pickle, kettle of fish | ||
| difficulty the quality of being difficult; "they agreed about the difficulty of the climb" | ||
Verb |
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| jam - interfere with or prevent the reception of signals; "Jam the Voice of America"; "block the signals emitted by this station" | ||
| block | ||
| disrupt, interrupt, cut off, break up throw into disorder; "This event disrupted the orderly process" | ||
| barrage jam jam an entire frequency spectrum; "During the Cold War, the Soviets routinely barrage jammed to interfere with transmissions from the West" | ||
| point jam jam a narrow band of frequencies; "We can counter point-jamming effectively" | ||
| spot jam jam a single frequency; "This operator is spot-jammed" | ||
| blanket jam jam a broad spectrum of frequencies to affect all communications in the area except for directional antenna communications | ||
| jam - crowd or pack to capacity; "the theater was jampacked" | ||
| jampack, ram, chock up, cram, wad | ||
| cram prepare (students) hastily for an impending exam | ||
| stuff fill tightly with a material; "stuff a pillow with feathers" | ||
| jam - crush or bruise; "jam a toe" | ||
| crush | ||
| contuse, bruise damage (plant tissue) by abrasion or pressure; "The customer bruised the strawberries by squeezing them" | ||
| jam - get stuck and immobilized; "the mechanism jammed" | ||
| malfunction, misfunction fail to function or function improperly; "the coffee maker malfunctioned" | ||
| jam - push down forcibly; "The driver jammed the brake pedal to the floor" | ||
| force, push impose urgently, importunately, or inexorably; "She forced her diet fads on him" | ||
| jam - block passage through; "obstruct the path" | ||
| obstruct, obturate, impede, occlude, block, close up | ||
| disengage, free become free; "in neutral, the gears disengage" | ||
| impede, hinder be a hindrance or obstacle to; "She is impeding the progress of our project" | ||
| block off, blockade impose a blockade on | ||
| barricado, barricade block off with barricades | ||
| barricade block off with barricades | ||
| asphyxiate, stifle, suffocate, choke smother or suppress; "Stifle your curiosity" | ||
| tie up finish the last row | ||
| dam, dam up obstruct with, or as if with, a dam; "dam the gorges of the Yangtse River" | ||
| block out, screen plan where and when songs should be inserted into a theatrical production, or plan a theatrical production in general | ||
| earth up, land up block with earth, as after a landslide | ||
| block up, barricade, block off, bar, blockade, stop, block block off with barricades | ||
| clog up, congest, choke off, back up, clog, foul, choke suppress; "He choked down his rage" | ||
| jam - press tightly together or cram; "The crowd packed the auditorium" | ||
| throng, mob, pack, pile | ||
| crowd together, crowd to gather together in large numbers; "men in straw boaters and waxed mustaches crowded the verandah" | ||
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Wiktionary 
- jam (Noun)
A sweet mixture of fruit boiled with sugar and allowed to congeal. Often spread on bread or toast or used in jam tart s. - jam (Noun)
A difficult situation. - jam (Noun)
Blockage, congestion. - jam (Noun)
Roller derby A play during which points can be scored. - jam (Noun)
Any of several rock-climbing maneuvers requiring wedging of an extremity into a tight space. - jam (Noun)
luck. - jam (Verb)
To get something stuck in a confined space. - jam (Verb)
To brusquely force something into a space; cram, squeeze. - jam (Verb)
To cause congestion or blockage. Often used with "up". - jam (Verb)
To block or confuse a broadcast signal. - jam (Verb)
To throw a pitch at or near the batter's hands. - jam (Verb)
To play music. - jam (Verb)
To injure a finger or toe by sudden compression of the digit's tip. - jam (Verb)
Roller derby To attempt to score points.
Webster DictionaryWebster's Unabridged Dictionary 📘
- jam (n.)
A kind of frock for children. - jam (n.)
See Jamb. - jam (v. t.)
To press into a close or tight position; to crowd; to squeeze; to wedge in. - jam (v. t.)
To crush or bruise; as, to jam a finger in the crack of a door. - jam (v. t.)
To bring (a vessel) so close to the wind that half her upper sails are laid aback. - jam (n.)
A mass of people or objects crowded together; also, the pressure from a crowd; a crush; as, a jam in a street; a jam of logs in a river. - jam (n.)
An injury caused by jamming. - jam (n.)
A preserve of fruit boiled with sugar and water; as, raspberry jam; currant jam; grape jam.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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jam
To render passage impossible by physical obstruction. -
jam
A difficult situation. -
jam
A crowd of people pressed close together in a small space. -
jam
Preserve of crushed fruit. -
jam
To press tightly together or cram.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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jam
jam, n. a conserve of fruit boiled with sugar. [Ety. dub.; perh. from jam, to squeeze.] -
jam
jam, v.t. to press or squeeze tight:—pr.p. jam′ming; pa.p. jammed.—n. a crush, squeeze. [Cf. champ.]
Sailor's Word-BookThe Sailor's Word-Book ⛵
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jam
Anything being confined, so that it cannot be freed without trouble and force; the term is also applied to the act of confining it. To squeeze, to wedge, to press against. (See JAMBING.)
Foolish DictionaryThe Foolish Dictionary 🤡
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jam
A pantry composition in A minor.
Wikipedia 
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Jam is a condiment. It is made from fruit usually, by adding sugar, and sometimes pectin. Most jams are cooked.
Usually a jam contains as much sugar as it contains fruit. The two parts are then cooked together.
In the European Union, there is the jam directive (Council Directive 79/693/EEC, 24 July 1979). It sets minimum standards for the amount of "fruit" in jam, but the definition of fruit was expanded. This was done to take several unusual kinds of jam made in the EU into account. For this purpose, "fruit" is considered to include fruits that are not usually treated as fruits, such as tomatoes; fruits that are not normally made into jams, such as melons and water melons; and vegetables that are sometimes made into jams, such as: rhubarb (the edible part of the stalks), carrots, sweet potatoes, cucumbers, and pumpkins. This definition continues to apply in the new directive, Council Directive 2001/113/EC (20 December 2001).
Marmalade is jam made from oranges.
Joan Miró used blackberry jam as an art medium.
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