The Collaborative International Dictionary of English v.0.48:

Ruck \Ruck\, n.
   A roc. [Obs. or prov. Eng.] --Drayton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ruck \Ruck\, n. [Icel. hrukka. Cf. Ruck, v. t.]
   A wrinkle or crease in a piece of cloth, or in needlework.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ruck \Ruck\, v. i. [Cf. Dan. ruge to brood, to hatch.]
   To cower; to huddle together; to squat; to sit, as a hen on
   eggs. [Obs. or Prov. Eng.] --Gower. South.
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         The sheep that rouketh in the fold.      --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Ruck \Ruck\, n. [Cf. Ruck.]
   1. A heap; a rick. [Prov Eng. & Scot.]
      [1913 Webster]

   2. The common sort, whether persons or things; as, the ruck
      in a horse race. [Colloq.]
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            The ruck in society as a whole.       --Lond. Sat.
                                                  Rev.
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WordNet (r) 3.0 (2006):

ruck
    n 1: a crowd especially of ordinary or undistinguished persons
         or things; "his brilliance raised him above the ruck"; "the
         children resembled a fairy herd" [syn: ruck, herd]
    2: an irregular fold in an otherwise even surface (as in cloth)
       [syn: pucker, ruck]
    v 1: become wrinkled or drawn together; "her lips puckered"
         [syn: pucker, ruck, ruck up]