collar

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

• noun The part of a garment that encircles the neck, especially when raised or folded.
• noun A tight-fitting necklace.
• noun A restraining or identifying band of leather, metal, or plastic put around the neck of an animal.
• noun The cushioned part of a harness that presses against the shoulders of a draft animal.
• noun Biology An encircling structure or bandlike marking, as around the neck of an animal, suggestive of a collar.
• noun Any of various ringlike devices used to limit, guide, or secure a machine part.
• noun Slang An arrest, as of a criminal.
• transitive verb To furnish with a collar.
• transitive verb To seize or detain.
• transitive verb To arrest (a criminal, for example).

from The Century Dictionary.

• To seize by the collar.
• To put a collar on.
• To roll up and bind (a piece of meat): as, to collar beef. See collared beef, under collared.
• In racing slang, to draw up to; get even with or be neck-and-neck with in racing.
• In cricket, to become complete master of (the bowling): said of the batsman.
• To lay hold of; ‘nab’; take possession of; in foot-ball, to tackle.
• noun Something worn about the neck, whether for restraint, convenience, or ornament.
• noun Anything resembling a collar; something in the form of a collar, or analogous to a collar in situation.
• noun A sort of punch made of sack, cider, and sugar. The Cheats, 1662, in Wright.

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

• transitive verb To seize by the collar.
• transitive verb To put a collar on.
• transitive verb to arrest, as a wanted criminal. Same as put the collar on.
• transitive verb to roll it up, and bind it close with a string preparatory to cooking it.
• noun Something worn round the neck, whether for use, ornament, restraint, or identification.
• noun A ring or cincture.
• noun A collar beam.
• noun (Bot.) The neck or line of junction between the root of a plant and its stem.
• noun An ornament worn round the neck by knights, having on it devices to designate their rank or order.
• noun A ringlike part of a mollusk in connection with esophagus.
• noun A colored ring round the neck of a bird or mammal.
• noun (Mech.) A ring or round flange upon, surrounding, or against an object, and used for restraining motion within given limits, or for holding something to its place, or for hiding an opening around an object.
• noun (Naut.) An eye formed in the bight or bend of a shroud or stay to go over the masthead; also, a rope to which certain parts of rigging, as dead-eyes, are secured.
• noun (Mining) A curb, or a horizontal timbering, around the mouth of a shaft.
• noun (Arch.) a horizontal piece of timber connecting and tying together two opposite rafters; -- also, called simply collar.
• noun [Eng.] the quantity of brawn bound up in one parcel.
• noun a day of great ceremony at the English court, when persons, who are dignitaries of honorary orders, wear the collars of those orders.
• noun to get free; to disentangle one's self from difficulty, labor, or engagement.

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

• noun The part of an upper garment (shirt, jacket, etc.) that fits around the neck and throat, especially if sewn from a separate piece of fabric.
• noun A decorative band or other fabric around the neckline
• noun A chain worn around the neck
• noun A similar detachable item
• noun Anything that encircles the neck.
• noun A band or chain around an animal's neck, used to restrain and/or identifie it.