switchblade knife

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Thân thiện
Definition

Noun: A folding knife with a blade housed inside the handle that is released and locked into an open position automatically by a spring mechanism when a button or lever on the handle is pressed.

Usage

The term "switchblade knife" refers specifically to the object itself. It is a countable noun. - It is often discussed in legal contexts due to restrictions on its possession in many jurisdictions. - It is associated with a specific mechanical action (spring-operated) and method of deployment (button/lever press).

Examples
  • The police confiscated a switchblade knife during the search.
  • In the classic film, the character flicked open a switchblade knife with a menacing click.
  • Laws in this state prohibit carrying a switchblade knife in public.
Advanced Usage
  • "Automatic knife" is a more formal or technical synonym often used in legal statutes and by knife enthusiasts.
  • The term can carry cultural connotations from mid-20th century films, sometimes associated with youth gangs or street violence.
Variants and Related Words
  • Switchblade (noun): A common shortened form of "switchblade knife." (Example: )
  • Automatic knife (noun): A synonym emphasizing the automatic opening mechanism.
  • Flick knife (noun): A synonym chiefly used in British English.
  • Pocketknife (noun): A general term for a folding knife carried in a pocket, which includes non-automatic types like penknives.
Synonyms
  • Automatic knife
  • Flick knife (primarily UK)
  • Spring knife
Antonyms / Contrasting Terms
  • Manual knife: A folding knife that requires two hands or a manual action (like a nail nick) to open the blade.
  • Fixed-blade knife: A knife with a blade that does not fold, permanently extended from the handle.
Related Phrases / Collocations
  • To flick open a switchblade knife: Describes the quick action of opening the knife.
  • Switchblade law / legislation: Refers to laws regulating the possession or sale of such knives.
  • Spring-assisted knife: A related but distinct type of knife where a spring aids, but does not fully automate, the opening after the user initiates blade movement.
Noun
  1. a pocketknife with a blade that springs open at the press of a button

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