gravity knife

noun

A folding knife of this type.

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Meanings

noungravity knife (plural gravity knives)

plural gravity knives

  1. A type of knife that with the press of a button, allows the blade to drop out of the handle, and then quickly opened up full, for quick use, also allowing it to be flicked open with a flick of the wrist.
    1. A folding knife of this type.
    2. A telescoping knife of this type.

Synonyms & antonyms

Narrower
paratrooper knife

Origin

From gravity + knife. From being a folding knife that could be opened by allowing gravity to draw out the blade.

Full word history & related roots →
Cite this entry
APA

gravity knife. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/gravity%20knife

MLA

“gravity knife.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/gravity%20knife. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “gravity knife,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/gravity%20knife.

Source: gravity knife on Wiktionary, CC BY-SA 4.0.