What does "jackknife" mean?
Jackknife: A large, strong clasp knife for the pocket; a pocket knife. JACK-'-LANTERN Jack"-o'-lan`tern, n. See Jack-with-a-lantern, under 2d Jack.
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17 · Modified: 2026-07-17