These nouns refer to something that is said or done in order to evoke laughter or amusement. Joke especially denotes an amusing story with a punch line at the end: told jokes at the party. Jest suggests frolicsome humor: amusing jests that defused the tense situation. A witticism is a witty, usually cleverly phrased remark: a speech full of witticisms. A quip is a clever, pointed, often sarcastic remark: responded to the tough questions with quips. Sally denotes a sudden quick witticism: ended the debate with a brilliant sally. Crack and wisecrack refer less formally to flippant or sarcastic retorts: made a crack about my driving ability; punished for making wisecracks in class. Gag is principally applicable to a broadly comic remark or to comic by-play in a theatrical routine: one of the most memorable gags in the history of vaudeville.
See joke in Webster's New World Roget's A-Z Thesaurus II
noun
Words or actions intended to excite laughter or amusement: