adductor

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

• noun A muscle that draws a body part, such as a finger, arm, or toe, inward toward the median axis of the body or of an extremity.

from The Century Dictionary.

• noun adductors (-torz) or adductores (ad-uk-tō′ rēz). In anatomy and zoology, that which adducts; specifically, the name of several muscles which draw certain parts to or toward one common center or median line: the opposite of abductor.
• Of or pertaining to an adductor; having the function of adducting; adducent: as, the adductor muscles of the thigh: opposed to abductor.
• In malacology, the muscles which draw together or close the valves in bivalve mollusks. See cut under Waldheimia.

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

• noun (Anat.) A muscle which draws a limb or part of the body toward the middle line of the body, or closes extended parts of the body; -- opposed to abductor.

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

• noun anatomy A muscle which draws a limb or part of the body toward the middle line of the body, or closes extended parts of the body; -- opposed to abductor; as, the adductor of the eye, which turns the eye toward the nose.

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

• noun a muscle that draws a body part toward the median line