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The Collaborative International Dictionary of English v.0.48 (gcide)

Talon \Tal"on\, n. [F., heel, spur, LL. talo, fr. L. talus the
ankle, heel.]
1. The claw of a predaceous bird or animal, especially the
claw of a bird of prey. --Bacon.
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2. (Zool.) One of certain small prominences on the hind part
of the face of an elephant's tooth.
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3. (Arch.) A kind of molding, concave at the bottom and
convex at the top; -- usually called an {ogee}.
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Note: When the concave part is at the top, it is called an
{inverted talon}.
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4. The shoulder of the bolt of a lock on which the key acts
to shoot the bolt. --Knight.
[1913 Webster] Talook