Button up

verb

Definitions

1.verbTo remain silent, especially in order to keep a secret or to avoid saying something inappropriate.

2.verbTo fasten with a button or buttons.

"Button up your shirt cuff. It has come undone"

3.verbTo fasten all the buttons on a coat, or similar item of clothing, to keep warm.

"Button up well. It's freezing outside today."

4.verbTo conclude; to finalize; to put the finishing touches (on)

"It's time to button up the meeting."

5.verbTo seal off (a military vehicle or facility).

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