From WordNet (r) 3.0 (2006) [wn]:
tusk
n 1: a hard smooth ivory colored dentine that makes up most of
the tusks of elephants and walruses [syn: ivory, tusk]
2: a long pointed tooth specialized for fighting or digging;
especially in an elephant or walrus or hog
v 1: stab or pierce with a horn or tusk; "the rhino horned the
explorer" [syn: horn, tusk]
2: remove the tusks of animals; "tusk an elephant" [syn: tusk,
detusk]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Torsk \Torsk\, n. [Dan.; akin to Icel. [thorn]orskr a codfish,
G. dorsch.] (Zool.)
(a) The cusk. See Cusk.
(b) The codfish. Called also tusk.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tusk \Tusk\ (t[u^]sk), v. i.
To bare or gnash the teeth. [Obs.]
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tusk \Tusk\ (t[u^]sk), n. (Zool.)
Same as Torsk.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tusk \Tusk\, n. [OE. tusk, the same word as tusch, AS. tusc. See
Tush a tooth.]
1. (Zool.) One of the elongated incisor or canine teeth of
the wild boar, elephant, etc.; hence, any long, protruding
tooth.
[1913 Webster]
2. (Zool.) A toothshell, or Dentalium; -- called also
tusk-shell.
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3. (Carp.) 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.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Cusk \Cusk\ (k[u^]sk), n. (Zool.)
A large, edible, marine fish (Brosmius brosme), allied to
the cod, common on the northern coasts of Europe and America;
-- called also tusk and torsk.
[1913 Webster]