The Collaborative International Dictionary of English v.0.48:

Crimp \Crimp\ (kr[i^]mp), v. t. [imp. & p. p. Crimped
   (kr[i^]mt; 215); p. pr. & vb. n. Crimping.] [Akin to D.
   krimpen to shrink, shrivel, Sw. krympa, Dan. krympe, and to
   E. cramp. See Cramp.]
   1. To fold or plait in regular undulation in such a way that
      the material will retain the shape intended; to give a
      wavy appearance to; as, to crimp the border of a cap; to
      crimp a ruffle. Cf. Crisp.
      [1913 Webster]

            The comely hostess in a crimped cap.  --W. Irving.
      [1913 Webster]

   2. To pinch and hold; to seize.
      [1913 Webster]

   3. Hence, to entrap into the military or naval service; as,
      to crimp seamen.
      [1913 Webster]

            Coaxing and courting with intent to crimp him.
                                                  --Carlyle.
      [1913 Webster]

   4. (Cookery) To cause to contract, or to render more crisp,
      as the flesh of a fish, by gashing it, when living, with a
      knife; as, to crimp skate, etc.
      [1913 Webster]

   5. (Firearms) In cartridge making, to fold the edge of (a
      cartridge case) inward so as to close the mouth partly and
      confine the charge.
      [Webster 1913 Suppl.]

   Crimping house, a low lodging house, into which men are
      decoyed and plied with drink, to induce them to ship or
      enlist as sailors or soldiers.

   Crimping iron.
      (a) An iron instrument for crimping and curling the hair.
      (b) A crimping machine.

   Crimping machine, a machine with fluted rollers or with
      dies, for crimping ruffles, leather, iron, etc.

   Crimping pin, an instrument for crimping or puckering the
      border of a lady's cap.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Crimp \Crimp\, a.
   1. Easily crumbled; friable; brittle. [R.]
      [1913 Webster]

            Now the fowler . . . treads the crimp earth. --J.
                                                  Philips.
      [1913 Webster]

   2. Weak; inconsistent; contradictory. [R.]
      [1913 Webster]

            The evidence is crimp; the witnesses swear backward
            and forward, and contradict themselves. --Arbuthnot.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Crimp \Crimp\, n.
   1. A coal broker. [Prov. Eng.] --De Foe.
      [1913 Webster]

   2. One who decoys or entraps men into the military or naval
      service. -- Marryat.
      [1913 Webster]

   3. A keeper of a low lodging house where sailors and
      emigrants are entrapped and fleeced.
      [1913 Webster]

   4. Hair which has been crimped; -- usually in pl.
      [1913 Webster]

   5. A game at cards. [Obs.] --B. Jonson.
      [1913 Webster]

   Boot crimp. See under Boot.
      [1913 Webster]

WordNet (r) 3.0 (2006):

crimp
    n 1: an angular or rounded shape made by folding; "a fold in the
         napkin"; "a crease in his trousers"; "a plication on her
         blouse"; "a flexure of the colon"; "a bend of his elbow"
         [syn: fold, crease, plication, flexure, crimp,
         bend]
    2: someone who tricks or coerces men into service as sailors or
       soldiers [syn: crimp, crimper]
    3: a lock of hair that has been artificially waved or curled
    v 1: make ridges into by pinching together [syn: crimp,
         pinch]
    2: curl tightly; "crimp hair" [syn: crimp, crape, frizzle,
       frizz, kink up, kink]

Moby Thesaurus II by Grady Ward, 1.0:

201 Moby Thesaurus words for "crimp":
   Vandyke, abduce, abduct, abductor, aqueduct, bar, bit, blaze,
   bollix, bridle, bunco artist, bunco steerer, canal, canalization,
   canalize, cardsharp, cardsharper, carpetbagger, carry away,
   carry off, carve, chamfer, channel, check, chisel, chop, cocker,
   cockle, coil, con artist, con man, confidence man, constrain,
   corrugate, corrugation, crab, crack, cramp, crankle, crease,
   creasing, crenellate, crenulate, crimper, crimple, crinkle, crisp,
   crumbly, crumple, curl, cut, dado, dike, ditch, dog-ear, double,
   double over, doubling, duplicature, enfold, engrave, entrenchment,
   flection, flexure, flounce, flute, fold, fold over, fosse, foul up,
   friable, frill, frizz, frizzle, furrow, gash, gather, goffer,
   gouge, groove, gully, gum, gum up, gutter, ha-ha, hamper,
   hold back, hold down, hold for ransom, hold in, horse coper,
   horse trader, hurdle, impediment, impress, incise, indent, infold,
   inhibit, interfold, jackleg, jag, kennel, kidnap, kidnapper, kink,
   knit, knot, knurl, land pirate, land shark, land-grabber, lap over,
   lapel, lappet, lock, louse up, machicolate, mill, moat,
   mortgage shark, mountain, nick, notch, obstruction, pettifogger,
   picot, pink, pitchman, plait, plat, pleat, plica, plicate,
   plication, plicature, plow, ply, ponytail, pucker, pulverizable,
   pulverulent, purse, queer, quill, rabbet, ridge, rifle, rimple,
   ringlet, ripple, rivel, rub, ruche, ruching, ruck, ruckle, ruff,
   ruffle, rumple, run away with, rut, scallop, scarify, score,
   scotch, scratch, screw, scrunch, serrate, shanghai, shanghaier,
   shark, sharp, sharper, sharpie, shirr, shortchanger, shyster,
   skyjack, slash, slicker, slit, snafu, snag, snatch, spieler,
   spirit away, streak, striate, sunk fence, tooth, trench,
   triturable, trough, tuck, turn over, twill, wimple, withhold,
   wrinkle