# butterfly knife

> English word · Noun

## Definitions
1. A folding pocket knife with two handles counter-rotating around the tang such that, when closed, the blade is concealed within grooves in the handles.

## Etymology
Compound of butterfly + knife from the opening motion of the knife.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/butterfly-knife