We found 4 definitions of gratings from 4 different sources.
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What does gratings mean?
Wiktionary
gratings (Noun) Plural of grating.
Marine DictionaryUniversal Dictionary of the Marine⚓️
gratings caillebotis, a sort of open covers for the hatches, formed
by several small laths or battens of wood, which cross each other at
right angles, leaving a square interval between. They are formed to
admit the air and light from above into the lower apartments of the
ship, particularly when the turbulence of the sea or weather renders it
necessary to shut the ports between decks; and also to let the smoke
escape from the lower decks in the time of battle.
Sailor's Word-BookThe Sailor's Word-Book⛵
gratings An open wood-work of cross battens and ledges forming cover for the hatchways, serving to give light and air to the lower decks. In nautical phrase, he "who can't see a hole through a grating" is excessively drunk.
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