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(Science: zoology) same as torsk.

1. (Science: zoology) One of the elongated incisor or canine teeth of the wild boar, elephant, etc.; hence, any long, protruding tooth.

2. (Science: zoology) A toothshell, or dentalium; called also tusk-shell.

3. A projecting member like a tenon, and serving the same or a similar purpose, but composed of several steps, or offsets. Thus, in the illustration, a is the tusk, and each of the several parts, or offsets, is called a tooth.

Origin: OE. Tusk, the same word as tusch, AS. Tusc. See Tush a tooth.