The Collaborative International Dictionary of English v.0.48:

Flock \Flock\, v. i. [imp. & p. p. Flocked; p. pr. & vb. n.
   Flocking.]
   To gather in companies or crowds.
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         Friends daily flock.                     --Dryden.
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   Flocking fowl (Zool.), the greater scaup duck.
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The Collaborative International Dictionary of English v.0.48:

Flock \Flock\, v. t.
   To flock to; to crowd. [Obs.]
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         Good fellows, trooping, flocked me so.   --Taylor
                                                  (1609).
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The Collaborative International Dictionary of English v.0.48:

Flock \Flock\, n. [OE. flokke; cf. D. vlok, G. flocke, OHG.
   floccho, Icel. fl[=o]ki, perh. akin to E. flicker, flacker,
   or cf. L. floccus, F. floc.]
   1. A lock of wool or hair.
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            I prythee, Tom, beat Cut's saddle, put a few flocks
            in the point [pommel].                --Shak.
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   2. Woolen or cotton refuse (sing. or pl.), old rags, etc.,
      reduced to a degree of fineness by machinery, and used for
      stuffing unpholstered furniture.
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   3. Very fine, sifted, woolen refuse, especially that from
      shearing the nap of cloths, used as a coating for wall
      paper to give it a velvety or clothlike appearance; also,
      the dust of vegetable fiber used for a similar purpose.
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   Flock bed, a bed filled with flocks or locks of coarse
      wool, or pieces of cloth cut up fine. "Once a flock bed,
      but repaired with straw." --Pope.

   Flock paper, paper coated with flock fixed with glue or
      size.
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The Collaborative International Dictionary of English v.0.48:

Flock \Flock\, n. [AS. flocc flock, company; akin to Icel.
   flokkr crowd, Sw. flock, Dan. flok; prob. orig. used of
   flows, and akin to E. fly. See Fly.]
   1. A company or collection of living creatures; -- especially
      applied to sheep and birds, rarely to persons or (except
      in the plural) to cattle and other large animals; as, a
      flock of ravenous fowl. --Milton.
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            The heathen . . . came to Nicanor by flocks. --2
                                                  Macc. xiv. 14.
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   2. A Christian church or congregation; considered in their
      relation to the pastor, or minister in charge.
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            As half amazed, half frighted all his flock.
                                                  --Tennyson.
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The Collaborative International Dictionary of English v.0.48:

Flock \Flock\, v. t.
   To coat with flock, as wall paper; to roughen the surface of
   (as glass) so as to give an appearance of being covered with
   fine flock.
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WordNet (r) 3.0 (2006):

flock
    n 1: a church congregation guided by a pastor
    2: a group of birds
    3: (often followed by `of') a large number or amount or extent;
       "a batch of letters"; "a deal of trouble"; "a lot of money";
       "he made a mint on the stock market"; "see the rest of the
       winners in our huge passel of photos"; "it must have cost
       plenty"; "a slew of journalists"; "a wad of money" [syn:
       batch, deal, flock, good deal, great deal,
       hatful, heap, lot, mass, mess, mickle, mint,
       mountain, muckle, passel, peck, pile, plenty,
       pot, quite a little, raft, sight, slew, spate,
       stack, tidy sum, wad]
    4: an orderly crowd; "a troop of children" [syn: troop,
       flock]
    5: a group of sheep or goats [syn: flock, fold]
    v 1: move as a crowd or in a group; "Tourists flocked to the
         shrine where the statue was said to have shed tears"
    2: come together as in a cluster or flock; "The poets
       constellate in this town every summer" [syn: cluster,
       constellate, flock, clump]