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1. A line in a play or film, for example, that elicits a big laugh: "He doesn't go for the big boffs, artificially inflated, but lets his comedy build through a leisurely accumulation of bizarre details" (Vincent Canby).
2. A big laugh.
3. A conspicuous success. Also called boffo, boffola.
[Probably from b(ox) off(ice).]
boff 2(bŏf) Vulgar Slang
v. boffed, boff·ing, boffs
To have sexual intercourse with.
To engage in sexual intercourse.
[From boff, to hit, variant of buff, from Middle English buffe, a blow, from Old French, of imitative origin.]
informal short for boffin
n. Slang. n.
a. a box-office hit.
b. a joke or humorous line producing hearty laughter.
2. a loud hearty laugh; belly laugh.
3. something very successful; a hit.
[1945–50; compare boffo]