ruck

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

• intransitive verb To make a fold in; crease.
• intransitive verb To become creased.
• noun A crease or pucker, as in cloth.
• noun A multitude; a throng.
• noun The undistinguished crowd or ordinary run of persons or things.
• noun People who are followers, not leaders.
• noun A play in Rugby in which a mass of players gathers around a ball dropped by a tackled ball carrier, with each player attempting to gain possession of the ball by kicking it to a teammate.
• noun The mass of players during such a play.

from The Century Dictionary.

• To squat, like a bird on its nest or a beast crouching; crouch down; cower; hence, to huddle together; lie close, as sheep in a fold.
• The furies made the bride-groomes bed, and on the house did rucke
• A cursed owle, the messenger of ill successe and lucke.
• To perch; seat, as a bird when roosting: used reflexively.
• noun A fold, crease, or pucker in the material of a garment, resulting from faults in the making.
• noun In printing, a crease or wrinkle made in a sheet of paper in passing from the feed-board to impression.
• To wrinkle; crease; pucker: usually with up: as, to ruck up cloth; to ruck up a silk skirt.
• To ruffle the temper of; annoy; vex: followed by up.
• To become creased and wrinkled; draw up in wrinkles or puckers: as, this stuff rucks easily.
• To be ruffled in temper; be annoyed, vexed, or excited: followed by up.
• noun Same as rick.
• noun A vague unit of volume, a stack, about 5¾ cubic yards of bark.
• noun A crowd or throng; especially, a closely packed and indiscriminate crowd or mass of persons or things; a jam; a press.
• noun The common run of persons or things; the commonplace multitude, as contrasted with the distinguished or successful few: specifically said of the defeated horses in a race.
• noun Trash; rubbish; nonsense.
• To gather together into heaps.
• noun A small heifer.
• noun A rut in a road.
• noun Same as roc.

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

• noun Obs. or prov. Eng. A roc.
• intransitive verb Obs. or Prov. Eng. To cower; to huddle together; to squat; to sit, as a hen on eggs.
• noun A wrinkle or crease in a piece of cloth, or in needlework.
• noun Prov Eng. & Scot. A heap; a rick.
• noun colloq. The common sort, whether persons or things.
• verb To draw into wrinkles or unsightly folds; to crease.

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

• verb obsolete, transitive To act as a ruckman in a stoppage in Australian Rules football.
• verb transitive To crease or fold.
• verb intransitive To become folded.
• noun A crease, a wrinkle, a pucker, as on fabric.

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

• noun a crowd especially of ordinary or undistinguished persons or things
• verb become wrinkled or drawn together
• noun an irregular fold in an otherwise even surface (as in cloth)