sheath knife

noun

A knife with a fixed blade that fits in a protective sheath when not in use; such a knife may be small (serving as a neck knife, boot knife, or pocketknife) or large (hung on a belt).

Meanings

nounsheath knife (plural sheath knives)

plural sheath knives · alternative sheath-knife

  1. A knife with a fixed blade that fits in a protective sheath when not in use; such a knife may be small (serving as a neck knife, boot knife, or pocketknife) or large (hung on a belt).

    But when he saw this he loosened his sheath-knife and held it ready.

    1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 159
    1 more example

    Preparing a running noose they slipped it over his arms, pinioning them to his side, and then proceeded with sheath knife and marline-spike to open his mouth for investigation, but not without strenuous efforts on the part of the subject for revengeful retaliation.

    1877, R. Elton Smile [pseudonym; Elton Romeo Smilie], chapter III, in The Manatitlans; or A Record of Scientific Explorations in the Andean La Plata, S.A., Buenos Ayres: Imprenta De Razon [actually Cambridge, Mass.: The Riverside Press], →OCLC, page 26

    Synonyms: fixie

Synonyms & antonyms

nounA knife with a fixed blade that fits in a protective sheath when not in use; such a knife may be small (serving as a neck knife, boot knife, or pocketknife) or large (hung on a belt).

Similar

More synonyms by meaning

nouna knife with a fixed blade that is carried in a sheath

Similar
Broader
Also see

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

sheath knife. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sheath%20knife

MLA

“sheath knife.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sheath%20knife. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sheath knife,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sheath%20knife.

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