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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Punch endings. 8 letters:

TAGLINES: Punch endings.
TIMECARD: It's often punched at the end of the day
CHIN: End of a punch?
GIRLSNOTASOFTEN: End of the zinger ... and start of the punch line