Ruck, ruk, v.i. to squat: to crouch down: to cower: to huddle together.—v.t. to perch, to roost.

Ruck, ruk, n. a crowd: a press: the common run: trash, nonsense.—v.t. to gather in heaps. [Prob. Scand.; Old Sw. ruka, a heap.]

Ruck, ruk, n. a small heifer.

Ruckle, ruk′l, n. (Scot.) a rattling noise in the throat, as from suffocation.—v.i. to emit such a sound. [Prob. cog. with Dut. rogchelen, to hawk.]

Ructation, ruk-tā′shun, n. the act of belching: eructation. [L. ructāre, to belch.]

Ruction, ruk′shun, n. (slang) a vexation: a disturbance: a rumpus. [Prob. a corr. of eruption.]

Rud, rud, n. redness: blush: flush: red ochre for marking sheep.—v.t. to make red. [A.S. rudu, redness, reódan, to redden.]

Rud, rud, v.t. (prov.) to rub: to polish.

Rudas, rōō′das, n. (Scot.) a foul-mouthed old woman: a randy, a hag.—adj. bold, coarse.

Rudbeckia, rud-bek′i-a, n. a genus of composite plants, abundant in the eastern and central United States, the cone-flowers. [Named from the Swedish botanist Olaus Rudbeck (1630-1702).]