romp

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

• intransitive verb To play or frolic boisterously.
• intransitive verb To run or advance in a rapid or easy manner.
• intransitive verb Slang To win a race or game easily.
• noun Lively, merry play; frolic.
• noun Lively or frolicsome play that encompasses lovemaking.
• noun One, especially a girl, that sports and frolics.
• noun A rapid or easy pace.
• noun Slang An easy win.

from The Century Dictionary.

• To play rudely and boisterously; leap and frisk about in play.
• noun In racing, an easy, unforced pace.
• In racing, to run easily, as if in a frolic; run without effort; hence, to accomplish something with apparently little effort.
• noun A rude girl who indulges in boisterous play.
• noun Rude play or frolic: as, a game of romps.

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

• noun A girl who indulges in boisterous play.
• noun Rude, boisterous play or frolic; rough sport.
• intransitive verb To play rudely and boisterously; to leap and frisk about in play.
• intransitive verb To go rapidly and without strained effort.
• intransitive verb To win easily; -- often used with over, in sports games

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

• verb intransitive To play about roughly, energetically or boisterously.
• verb transitive (US) (Often used with down) To press forcefully, to encourage vehemently, to oppress.
• verb To win easily.
• verb slang To engage in playful or boisterous sex.
• noun A period of boisterous play, a frolic.
• noun slang A bout of playful or boisterous sex.
• noun archaic A girl who indulges in boisterous play; a tomboy.

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

• noun a girl who behaves in a boyish manner
• noun an easy victory
• verb run easily and fairly fast
• verb win easily
• verb play boisterously
• noun gay or light-hearted recreational activity for diversion or amusement