rim

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

• noun The upper or outer edge of an object, especially when curved or circular. synonym: border.
• noun The upper edge of a steep slope; a cliff or brink.
• noun The circular outer part of a wheel, furthest from the axle.
• noun A circular metal structure around which a wheel tire is fitted.
• transitive verb To furnish with a rim.
• transitive verb Sports To roll around the rim of (a basket or golf cup, for example) without falling in.
• transitive verb Vulgar Slang To perform anilingus on.

from The Century Dictionary.

• noun The border, edge, or margin of anything, whether forming part of the thing itself, or separate from it and surrounding or partly surrounding it, most commonly a circular border, often raised above the inclosed surface: as, the rim of a hat.
• noun Specifically In a wheel, the circular part furthest from the axle, connected by spokes to the hub, nave, or boss.
• noun Synonyms The rim of a vessel; the brim of a cup or goblet; the brink, verge, or edge of a precipice; the margin of a brook or a book; the border of a garment or a country.
• noun A membrane.
• noun The membrane inclosing the intestines; the peritoneum; hence, loosely, the intestines; the belly.
• To surround with a rim or border; form a rim round.
• To plow or slash the sides of, as mackerel, to make them seem fatter.
• noun The pawl-race or ratchet-ring of a capstan.

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

• transitive verb To furnish with a rim; to border.
• noun The border, edge, or margin of a thing, usually of something circular or curving.
• noun obsolete The lower part of the abdomen.
• noun (Phonetics) the line between the gums and the palate.
• noun (Mil.) See under Cartridge.
• noun See under Lock.

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

• noun An edge around something, especially when circular.
• noun automotive, cycling wheelrim
• verb To form a rim on.
• verb To follow the contours, possibly creating a circuit
• verb of a ball To roll around a rim.
• verb slang to lick the anus of a partner as part of the sexual act.

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

• noun (basketball) the hoop from which the net is suspended
• verb run around the rim of
• noun the outer part of a wheel to which the tire is attached
• verb furnish with a rim
• noun the top edge of a vessel or other container
• noun the shape of a raised edge of a more or less circular object
• noun a projection used for strength or for attaching to another object
• verb roll around the rim of