- in elephants, wild boars, walruses, etc., a very long, large, pointed tooth, usually one of a pair, projecting outside the mouth and used for defense, digging up food, etc.
- any tooth or projection suggestive of a tusk
ME, by metathesis < OE tucs, akin to OFris tusk < PGmc *tunth-ska < *tunth-, *tanth-: see tooth
to dig, gore, etc. with a tusk or tusks