cop

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

• noun A cone-shaped or cylindrical roll of yarn or thread wound on a spindle.
• noun Chiefly British A summit or crest, as of a hill.
• noun A police officer.
• noun One that regulates certain behaviors or actions.
• transitive verb To get hold of; gain or win.
• transitive verb To perceive by one of the senses.
• transitive verb To take unlawfully or without permission; steal.
• idiom (cop a feel) To fondle someone sexually in a surreptitious way.
• idiom (cop a plea) To plead guilty to a lesser charge so as to avoid standing trial for a more serious charge.

from The Century Dictionary.

• noun The head or top of a thing; especially, the top of a hill.
• noun A tuft on the head of birds.
• noun A round piece of wood fixed on the top of a beehive. [Prov. Eng.]
• noun A mound or bank; a heap of anything. [North. Eng.]
• noun An inclosure with a ditch around it. [Prov. Eng.]
• noun A fence. Halliwell. [Prov. Eng.]
• noun A merlon, or portion of a battlement.
• noun The conical ball of thread formed on the spindle of a wheel or spinning-frame. Also called coppin.
• noun A tube upon which silk thread is sometimes wound, instead of being made into skeins.
• noun A measure of peas, 15 sheaves in the field and 16 in the barn.
• noun A spider.
• noun An obsolete form of cup.
• noun A policeman.
• To capture or arrest as a prisoner: as, he was copped for stealing.
• To throw underhand.
• noun In golf, the face of a bunker.
• noun An abbreviation of Copernican;
• noun of Coptic;
• noun [lowercase] of copper.

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

• noun obsolete The top of a thing; the head; a crest.
• noun A conical or conical-ended mass of coiled thread, yarn, or roving, wound upon a spindle, etc.
• noun A tube or quill upon which silk is wound.
• noun (Mil. Arch.) Same as Merlon.
• noun Slang A policeman.
• noun a kind of cotton waste, composed chiefly of remnants of cops from which the greater part of the yarn has been unwound.

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

• noun obsolete A spider.
• noun slang, law enforcement A police officer or prison guard.
• noun slang, offensive, African American Vernacular by extension any white male especially large and clean cut
• noun crafts The ball of thread wound on to the spindle in a spinning machine.
• noun obsolete The top, summit, especially of a hill.
• noun obsolete The head.
• verb transitive to obtain, to purchase (as in drugs), to get hold of, to take
• verb transitive to (be forced to) take; to receive; to shoulder; to bear, especially blame or punishment for a particular instance of wrongdoing.
• verb transitive to steal
• verb transitive to adopt
• verb intransitive, usually with "to" (slang) to admit, especially to a crime.

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

• verb take into custody
• verb take by theft
• noun uncomplimentary terms for a policeman