A knockout blow; a mighty or devastating blow.

A feigned punch with the fist.

(idiomatic) An unexpected punch or similar blow. / (idiomatic) A disabling punch targeting a place which is not normally acceptable in a "fair fight", such as on the back of the head.

(idiomatic) To deliver an unexpected blow.

A paper tape punch that does not produce little pieces of paper. Instead, "the perforations are not completely cut out but the chads are permitted to remain attached to the perforated material (for example, tape)". (U.S. Patent 2,255,794, filed May 20, 1939)

Alternative spelling of punch drunk

(informal) A game in which the first player to call "Punch buggy!" on sighting a Volkswagen Beetle gets to punch the other.

To create a small hole or indentation in a workpiece as a guide in preparation for drilling.

(countable) A tool used to create a small indentation in preparation for drilling a hole. / (countable) The small indentation created by such a tool.

The final part of a joke; the word, sentence, or exchange of sentences that is intended to be funny and provokes laughter from the listeners.