pocketknife means A knife small enough for carrying safely and handily in a pocket; usually a folding knife (with blades or tools that the user can fold or retract into the handle). Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
From pocket + knife.
noun
- A knife small enough for carrying safely and handily in a pocket; usually a folding knife (with blades or tools that the user can fold or retract into the handle).“Jimmy had a pocketknife, and he wandered into the drawing-room with it one day, alone, and reduced ten thousand dollars' worth of furniture to an indeterminable value in rather less than three-quarters of an hour.”