noun
switchblade
SWIHCH-blayd
noun
1
A folding knife whose blade springs open automatically when a button is pressed.
"The switchblade was confiscated at airport security."
How to Use Switchblade
Learner’s notesIn plain EnglishA knife with a blade that pops open at the press of a button.
Word Forms
switchbladed past tense, switchblades plural, switchblades singular
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The _____ was confiscated at airport security.
Etymology
A compound of switch (in the sense of a quick mechanical action) and blade.