Definition of flick knife in English English dictionary
A type of knife which has the blade mounted on a pivot so that it can fold back sideways into the handle when not in use, but can flick out straight, usually with a spring-loaded mechanism, when required. Such a knife is almost always used as a weapon
a knife with a blade inside the handle that moves quickly into position when you press a button American Equivalent: switchblade
(British) switchblade, spring operated pocket knife which is opened by pushing a button on its handle