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switchblade knife

switchblade knife

1 5.9
A small folding knife that opens by itself when a button is pressed
  • noun
  • /ˈswɪtʃˌbleɪd naɪf/
  • US
translation icon : navaja automática
  • He reached into his pocket and pulled out a switchblade knife that opened with a simple press of the button.

Examples

  • When I hear the word "teenager" today, I almost immediately think in terms of switchblade knives, zip guns, gangs, rebellion, violence, and psychological difficulty.

    Fiction book (1995)
  • Suddenly he found himself focusing more intently on her arctic eyes, and before he knew what he was doing, he produced a switchblade knife and flicked it open.

    Fiction book (1992)
  • It's against the law to buy or sell switchblade knives.

  • You said he was using a switchblade knife, and they're harder to clean.

  • He reached into his pocket and pulled out a switchblade knife.

    Fiction book (1999)
  • Narrator 1: One day, Owen puts a switchblade knife in his pocket and walks into town.

    Fiction book (2000)
  • Beside it, stuck in the plank wall with a switchblade knife, is a piece of paper.

    Fiction book (1994)
  • Switchblade knives.

  • He kept an eye out for whirlwinds to stand in as he practiced flipping birds, the middle finger of his right hand snicking out like the blade of a switchblade knife.

    Fiction book (1995)
  • During the conflict, he brandished a switchblade knife to intimidate his opponents, highlighting its quick deployment.

Synonyms

switchblade
vsswitchblade knife
  • US
17 6.6

A small pocket knife with a blade that opens when you press a button

is the same but appears as a longer two-word phrase
pocketknife
vsswitchblade knife
9 3.4

A small folding knife that you carry in your pocket

focuses on automatic opening by a button rather than just folding for carrying
flick knife
vsswitchblade knife
  • UK
8.1

A small folding knife whose blade opens quickly when you press a button

is similar but describes neutral automatic opening rather than quick spring action

Surface Forms

Morphology

switchblade + knife

The phrase literally names a type of knife whose blade opens via a switching mechanism, so its meaning is directly compositional from the constituents (switch/blade + knife). Even if the single word 'switchblade' is less frequent, the components convey the function clearly and the NP is a descriptive, not idiomatic, label.

Etymology

Switchblade knife gets its name from how it works: pressing a small switch or button makes the blade suddenly flip out. So the name explains the meaning 'a pocketknife with a blade that opens automatically'.