Switchblade

//ˈswɪt͡ʃˌbleɪd// noun, verb

noun, verb ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A folding knife with a blade which opens automatically (under spring pressure) when a button is pressed.
  2. 2
    a pocketknife with a blade that springs open at the press of a button wordnet
Verb
  1. 1
    To attack or cut with a switchblade. transitive

    "I got terrible hangovers from the cheap booze; and, one night, I almost got switchbladed when I put my arm around the wrong "lady of the night."

  2. 2
    To spring open or up. intransitive

    "Switchblading open their silvery cell phones, they call their mortgage brokers and say “Buy.”"

  3. 3
    To (cause to) make a sudden move or transition. ambitransitive

    "He briefly rocked medical school, switchbladed to accounting and finally joked his first radio script in 1938."

Example

More examples

"On a nice spring day, when Jan was digging in the sandbox in the backyard, he found a small box. In the box was a shining switchblade with a mysterious inscription."

Etymology

From switch + blade.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.