talon

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The claw of a bird of prey.
• noun The similar claw of a predatory animal.
• noun Something similar to or suggestive of an animal's claw.
• noun The part of a lock that the key presses in order to shoot the bolt.
• noun Games The part of the deck of cards in certain card games left on the table after the deal.
• noun Architecture An ogee molding.

from The Century Dictionary.

• noun The claw of a bird or other animal; specifically, the claw of a bird of prey.
• noun A heel, or low cusp, of a tooth.
• noun In architecture, same as ogee.
• noun In locks, the shoulder on the bolt against which the key presses in shooting the bolt.
• noun That part of a pack of cards which remains after the hands have been dealt; the stock.
• noun The heel of the blade of a sword.

from the GNU version of the Collaborative International Dictionary of English.

• noun The claw of a predaceous bird or animal, especially the claw of a bird of prey.
• noun (Zoöl.) One of certain small prominences on the hind part of the face of an elephant's tooth.
• noun (Arch.) A kind of molding, concave at the bottom and convex at the top; -- usually called an ogee.
• noun The shoulder of the bolt of a lock on which the key acts to shoot the bolt.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A sharp, hooked claw of a bird of prey or other predatory animal.
• noun zoology One of certain small prominences on the hind part of the face of an elephant's tooth.
• noun architecture A kind of moulding, concave at the bottom and convex at the top; an ogee. (When the concave part is at the top, it is called an inverted talon.)
• noun The shoulder of the bolt of a lock on which the key acts to shoot the bolt.
• noun In the card game bezique, the remaining stock of undealt cards.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a sharp hooked claw especially on a bird of prey