Definition of button up Button up

but•ton up

We found 6 definitions of button up from 3 different sources.

What does button up mean?

Verb
button up - refuse to talk or stop talking; fall silent; "The children shut up when their father approached"
		close up, clam up, dummy up, shut up, belt up, be quiet, keep mum
		open up talk freely and without inhibition

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button up (Verb)
To fasten with a button or buttons.
button up (Verb)
To fasten all the buttons on a coat, or similar item of clothing, to keep warm.