A button on an alarm clock which, when pressed, silences the alarm temporarily, granting a few more minutes of sleep before the alarm sounds again.

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

simple past tense and past participle of butt

(US, slang) Having a butt or backside (of a specified kind).

simple past tense and past participle of but

plural of butter knife

A specialised dish for serving butter. It typically has a base with a separate fitting lid with its own handle.

(simile) Very cute.

plural of bread-and-butter issue

plural of butterbean