Ruck \Ruck\, v. t. & i. [imp. & p. p. Rucked; p. pr. & vb. n. Rucking.]

[Icel hrukkast to wrinkle, hrukka wrinkle, fold.]

To draw into wrinkles or unsightly folds; to crease; as, to ruck up a carpet. --Smart.

Source: Webster's Revised Unabridged Dictionary (1913)