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1911 Encyclopedia Britannica
(0. E. cnif, a word appearing in different forms in many Teutonic languages, cf. Du. knijf, Ger. Kneif, a shoemaker's knife, Swed. knif; the ultimate origin is unknown; Skeat finds the origin in the root of "nip," formerly "knip"; Fr. canif is also of Teutonic origin), a small cutting instrument, with the blade either fixed to the handle or fastened with a hinge so as to clasp into the handle (see Cutlery). For the knives chipped from flint by prehistoric man see Archaeology and Flint Implements.
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Chisholm, Hugh, General Editor. Entry for 'Knife'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/k/knife.html. 1910.