'punch line' definitions:
Definition of 'punch line'
From: WordNet
noun
Definition of 'punch line'
From: GCIDE
- punch line \punch" line`\, n.
- 1. The final sentence, phrase, or word in a joke or humorous story that is unexpected and produces the humorous effect; the point of a joke. [WordNet sense 1]
- Syn: laugh line, gag line, tag line. [PJC]
- 2. Hence: The final sentence, phrase, or word in any narration, speech, or advertisement that produces the speaker's intended effect. [PJC]