limb

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

• noun Astronomy The circumferential edge of the apparent disk of a celestial body.
• noun Mathematics The edge of a graduated arc or circle used in an instrument to measure angles.
• noun Botany The expanded tip of a plant organ, such as a petal or corolla lobe.
• noun One of the larger branches of a tree.
• noun One of the jointed appendages of an animal, such as an arm, leg, wing, or flipper, used for locomotion or grasping.
• noun An extension or a projecting part, as of a building or mountain range.
• noun An extension or part distinguished from the main body or group.
• noun A member or representative of a group.
• noun Archaic An impish child.
• transitive verb To remove the branches from.
• idiom ((out) on a limb) In a difficult, awkward, or vulnerable position.

from The Century Dictionary.

• To supply with limbs.
• To dismember; tear or carve off the limbs of: as, to limb a turkey; to limb a tree.
• noun In botany:
• noun The blade or broad part of a leaf.
• noun In geology, that portion of an anticline or syncline which lies on either side respectively of the arch or trough. Also called leg and flank.
• noun A part or member of an animal body distinct from the head and trunk; an appendicular member; a leg, an arm, or a wing: often limited in meaning to the leg, at present general out of affected or prudish unwillingness to use the word leg.
• noun The branch of a tree: applied only to a branch of some size, and not to a small twig.
• noun The part of a bow above or below the grip or handle.
• noun A thing or person regarded as a part of something else; a part; a member: as, a limb of the devil; a limb of the law.
• noun A mischievous or roguish person, especially a young person; an imp; a scapegrace; a scamp.
• noun Synonyms See member.
• noun In astronomy, the border or outermost edge of the disk of the sun or moon.
• noun The graduated edge of a circle or other astronomical or surveying instrument, etc.
• noun In zoology, the lateral area or marginal band of the cephalic shield of trilobites on either side of the glabellum, corresponding to a pleuron of the thoracic region.
• noun In botany, the border or upper spreading part of a monopetalous corolla, or of a petal or sepal.

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

• noun A part of a tree which extends from the trunk and separates into branches and twigs; a large branch.
• noun An arm or a leg of a human being; a leg, arm, or wing of an animal.
• noun A thing or person regarded as a part or member of, or attachment to, something else.
• noun An elementary piece of the mechanism of a lock.
• noun [Colloq.] a lawyer or an officer of the law.
• transitive verb rare To supply with limbs.
• transitive verb To dismember; to tear off the limbs of.
• noun (Bot.) The border or upper spreading part of a monopetalous corolla, or of a petal, or sepal; blade.
• noun (Astron.) The border or edge of the disk of a heavenly body, especially of the sun and moon.
• noun The graduated margin of an arc or circle, in an instrument for measuring angles.

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

• noun A major appendage of human or animal, used for locomotion (such as an arm, leg or wing)
• noun A branch of a tree.
• noun archery The part of the bow, from the handle to the tip.
• noun botany The border or upper spreading part of a monopetalous corolla, or of a petal or sepal; blade.
• noun astronomy The border or edge of the disk of a heavenly body, especially of the sun or moon.
• noun The graduated margin of an arc or circle in an instrument for measuring angles.
• verb To remove the limbs from an animal or tree.
• noun astronomy The apparent visual edge of a celestial body.
• noun on a measuring instrument The graduated edge of a circle or arc.

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

• noun (astronomy) the circumferential edge of the apparent disc of the sun or the moon or a planet
• noun any projection that is thought to resemble a human arm
• noun any of the main branches arising from the trunk or a bough of a tree
• noun the graduated arc that is attached to an instrument for measuring angles