switchblade
noun/ˈswɪtʃbleɪd/
/ˈswɪtʃbleɪd/
(especially North American English) (British English also flick knife)
- a knife with a blade (= sharp metal cutting part) inside the handle that jumps out quickly when a button is pressed
- Owning or carrying a switchblade is illegal in the United Kingdom.
Check pronunciation:
switchblade