Ruck

Noun

 * 1)  A rapidly moving throng or mob; a pack of people actively engaged in something.
 * 1873 Dandolo was constantly in the ditch, sometimes lying with his side against the bank, and had now been so hustled and driven that, had he been on the other side, he would have had no breath left to carry his rider, even in the ruck of the hunt. — Anthony Trollope, Phineas Redux, Chapter 16.
 * 1)  The situation formed when a runner is brought to ground and one or more members of each side are engaged above the ball, trying to win possession of it; a loose scrum.
 * 2)  Contesting a bounce or ball up; used appositionally in "ruck contest".  Rucks also used collectively either of ruckmen or of ruckmen and ruck rovers, and occasionally used in place of "followers" (including rovers too).
 * 3)  A fight, a scuffle.
 * 1914At last, out of the ruck rose Verman, disfigured and maniacal. With a wild eye he looked about him for his trusty rake; but Penrod, in horror, had long since thrown the rake out into the yard. Naturally, it had not seemed necessary to remove the lawn-mower. The frantic eye of Verman fell upon the lawnmower, and instantly he leaped to its handle. Shrilling a wordless war-cry, he charged, propelling the whirling, deafening knives straight upon the prone legs of Rupe Collins. Booth Tarkington, Penrod, Chapter 23.
 * 1)  The commonplace; the lower social classes.
 * 1874 He is well born." "His being higher in learning and birth than the ruck o' soldiers is anything but a proof of his worth. It shows his course to be down'ard."  — Thomas Hardy, Far from the Madding Crowd.

Verb

 * 1)  To act as a ruckman in a stoppage in Australian Rules football.

Verb

 * 1)  To crease or fold.
 * 2)  To become folded.
 * 1917 "Will you come over now and try on your dress?" Ally asked, looking at her with wistful admiration. "I want to be sure the sleeves don't ruck up the same as they did yesterday." — Edith Wharton, Summer, Chapter 12.

Noun

 * 1) A crease, a wrinkle, a pucker, as on fabric.

Thesaurus
Everyman, Public, a mass of, a world of, aggregation, and bobtail, army, assemblage, average, average man, bank, bevy, bezel, bunch, canaille, chamfer, chase, chink, cloud, cluster, clutter, cock, cocker, cockle, cohue, collection, common man, common ruck, common run, company, congeries, congregation, corrugate, corrugation, covey, crack, crankle, cranny, crease, crimp, crimple, crinkle, crowd, crumple, crush, cut, dado, deluge, drift, engraving, everyman, everywoman, flight, flock, flocks, flood, flute, fluting, fold, furrow, galaxy, gash, generality, girl next door, gouge, groove, group, hail, heap, hive, homme moyen sensuel, horde, host, incision, jam, knit, knot, large amount, legion, lots, many, mass, masses of, microgroove, mob, mound, muchness, multitude, muster, nest, numbers, ordinary Joe, ordinary run, pack, panoply, plica, plurality, press, pucker, purse, quantities, quite a few, rabbet, rabble, rabblement, rag, ragtag, ragtag and bobtail, rick, ridge, rifling, rimple, ripple, rivel, rout, ruckle, rumple, run, rut, score, scores, scratch, shirr, shoal, slit, spate, stack, streak, stria, striation, sulcation, sulcus, swarm, tag, throng, tidy sum, well-worn groove, wimple, worlds of, wrinkle

Etymology 1
Middle English ruke

Etymology 2
1780, from hrukka: "wrinkle, crease" from from  from. Akin to hrukka: ("wrinkle, crease, ruck"),  runza: "fold, wrinkle, crease" ( Runzel: "wrinkle"),  ronse: "frown". More at.

Noun
Ruck m


 * 1) jerk
 * 2) jolt

Etymology
Old High German rucch