(Science: zoology) same as torsk.
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.