(zoology) Any one of numerous species of moths of the family Zygaenidae, most of which are bright colored.

Alternative spelling of quicksmart

(informal) To become very angry or upset. / Used other than figuratively or idiomatically: see blow, gasket. To cause the seal made by a gasket to fail.

(now historical) A fivepenny; a fivepenny bit. / (slang) A flick-knife.