The Collaborative International Dictionary of English v.0.48:

crook \crook\ (kr[oo^]k), n. [OE. crok; akin to Icel. kr[=o]kr
   hook, bend, SW. krok, Dan. krog, OD. krooke; or cf. Gael.
   crocan crook, hook, W. crwca crooked. Cf. Crosier,
   Crotchet, Crutch, Encroach.]
   1. A bend, turn, or curve; curvature; flexure.
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            Through lanes, and crooks, and darkness. --Phaer.
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   2. Any implement having a bent or crooked end. Especially:
      (a) The staff used by a shepherd, the hook of which serves
          to hold a runaway sheep.
      (b) A bishop's staff of office. Cf. Pastoral staff.
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                He left his crook, he left his flocks. --Prior.
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   3. A pothook. "As black as the crook." --Sir W. Scott.
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   4. An artifice; trick; tricky device; subterfuge.
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            For all yuor brags, hooks, and crooks. --Cranmer.
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   5. (Mus.) A small tube, usually curved, applied to a trumpet,
      horn, etc., to change its pitch or key.
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   6. A person given to fraudulent practices; an accomplice of
      thieves, forgers, etc. [Cant, U.S.]
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   By hook or by crook, in some way or other; by fair means or
      foul.
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The Collaborative International Dictionary of English v.0.48:

Crook \Crook\ (kr??k), v. t. [imp. & p. p. Crooked (kr??kt);
   p. pr. & vb. n. Crooking.] [OE. croken; cf. Sw. kr?ka, Dan.
   kr?ge. See Crook, n.]
   1. To turn from a straight line; to bend; to curve.
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            Crook the pregnant hinges of the knee. --Shak.
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   2. To turn from the path of rectitude; to pervert; to
      misapply; to twist. [Archaic]
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            There is no one thing that crooks youth more than
            such unlawfull games.                 --Ascham.
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            What soever affairs pass such a man's hands, he
            crooketh them to his own ends.        --Bacon.
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The Collaborative International Dictionary of English v.0.48:

Crook \Crook\, v. i.
   To bend; to curve; to wind; to have a curvature. " The port .
   . . crooketh like a bow." --Phaer.
   [1913 Webster]

         Their shoes and pattens are snouted, and piked more
         than a finger long, crooking upwards.    --Camden.
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WordNet (r) 3.0 (2006):

crook
    n 1: someone who has committed a crime or has been legally
         convicted of a crime [syn: criminal, felon, crook,
         outlaw, malefactor]
    2: a circular segment of a curve; "a bend in the road"; "a crook
       in the path" [syn: bend, crook, twist, turn]
    3: a long staff with one end being hook shaped [syn: crook,
       shepherd's crook]
    v 1: bend or cause to bend; "He crooked his index finger"; "the
         road curved sharply" [syn: crook, curve]

Moby Thesaurus II by Grady Ward, 1.0:

359 Moby Thesaurus words for "crook":
   Judas, L, Malacca cane, aberrancy, aberration, advocate,
   alpenstock, andiron, angle, angle off, apex, appropriate, arc,
   arch, arm, athletic supporter, back, backbone, backing, bad person,
   bandeau, baton, bear off, bearer, beat, bend, bend back, bent,
   betrayer, bias, bifurcate, bifurcation, bight, bilk, blackleg,
   body snatcher, booster, bow, bra, brace, bracer, bracket, branch,
   branching off, brassiere, buckle, buttress, caduceus, cane, cant,
   carrier, catacaustic, catenary, caustic, cervix, chain,
   chain of office, cheat, cheater, chevron, chicken thief, chisel,
   chiseler, chouse, circle, circuitousness, clout, coal tongs, coin,
   con man, conchoid, contort, convict, coon, cop, corner, corset,
   cozen, cozener, crane, crank, criminal, crosier, cross,
   cross-staff, crotchet, crumple, crutch, crutch-stick, curl, curve,
   damper, deceiver, declination, decurve, deflect, deflection,
   defraud, defrauder, delinquent, den of thieves, departure,
   desperado, desperate criminal, detour, deviance, deviancy, deviate,
   deviation, deviousness, diacaustic, diddle, diddler, diffract,
   diffuse, digression, discursion, disperse, distort, divagate,
   divagation, divarication, diverge, divergence, diversion, divert,
   do, dogleg, dome, double, double-dealer, drift, drifting, elbow,
   ell, ellipse, embezzler, embow, errantry, evildoer, excursion,
   excursus, exorbitation, fasces, felon, festoon, filch, filcher,
   fire hook, fire tongs, firedog, flex, flimflam man, flimflammer,
   fork, foundation garment, fugitive, fulcrum, furcate, furcation,
   gallows bird, ganef, gangster, gaolbird, gavel, ghoul, girdle,
   grafter, grate, grating, grave robber, grid, griddle, gridiron,
   grill, griller, guy, guywire, gyp artist, gypper, hairpin,
   handstaff, heist, hook, hump, hunch, hyperbola, incurvate, incurve,
   indirection, inflect, inflection, jailbird, jewel thief, jock,
   jockstrap, juggler, keys, knee, knot, land pirate, land shark,
   land-grabber, larcener, larcenist, lawbreaker, lifter, lituus,
   loop, lurch, mace, mainstay, maintainer, malefactor, malevolent,
   malfeasant, malfeasor, mantle, mast, misfeasor, miter, mobster,
   nab, neck, nook, oblique, obliquity, outlaw, pallium, parabola,
   pastoral staff, paterissa, peculator, pererration, petty thief,
   pilferer, pinch, poacher, point, poker, portfolio, pothook, prop,
   prowler, public enemy, pull, purloiner, quarterstaff, quisling,
   quoin, racketeer, rambling, recurve, red hat, reflect, reflex,
   refract, reinforce, reinforcement, reinforcer, rest, resting place,
   retroflex, rigging, ring, robber, rod, rod of office, round, sag,
   salamander, scatter, scepter, scofflaw, screw, scrounger, sheer,
   shift, shifting, shifting course, shifting path, shillelagh,
   shoplifter, shoulder, shroud, sinner, sinus, skew, slant, slue,
   sneak thief, spine, spit, spring, sprit, staff, standing rigging,
   stave, stay, steal, stealer, stick, stiffener, straying,
   strengthener, support, supporter, sustainer, swag, swagger stick,
   swanking stick, sway, sweep, swerve, swerving, swindle, swindler,
   swinging, tack, thief, thug, tiara, tongs, tracery, traitor,
   transgressor, triple crown, tripod, trivet, truncheon, turn,
   turn awry, turning, turnspit, twist, two-timer, upholder,
   variation, vault, veer, vertex, villain, walking stick, wand,
   wand of office, wandering, warp, white-collar thief, wind,
   worker of ill, wrench, wrest, wring, writhe, wrongdoer, yaw, zag,
   zig, zigzag



U.S. Gazetteer Counties (2000):

Crook -- U.S. County in Oregon
   Population (2000):    19182
   Housing Units (2000): 8264
   Land area (2000):     2979.381699 sq. miles (7716.562847 sq. km)
   Water area (2000):    8.032038 sq. miles (20.802882 sq. km)
   Total area (2000):    2987.413737 sq. miles (7737.365729 sq. km)
   Located within:       Oregon (OR), FIPS 41
   Location:             44.212739 N, 120.534152 W
   Headwords:
    Crook
    Crook, OR
    Crook County
    Crook County, OR


U.S. Gazetteer Counties (2000):

Crook -- U.S. County in Wyoming
   Population (2000):    5887
   Housing Units (2000): 2935
   Land area (2000):     2858.590994 sq. miles (7403.716371 sq. km)
   Water area (2000):    11.926740 sq. miles (30.890113 sq. km)
   Total area (2000):    2870.517734 sq. miles (7434.606484 sq. km)
   Located within:       Wyoming (WY), FIPS 56
   Location:             44.561657 N, 104.638851 W
   Headwords:
    Crook
    Crook, WY
    Crook County
    Crook County, WY


U.S. Gazetteer Places (2000):

Crook, CO -- U.S. town in Colorado
   Population (2000):    128
   Housing Units (2000): 80
   Land area (2000):     0.129100 sq. miles (0.334367 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.129100 sq. miles (0.334367 sq. km)
   FIPS code:            18640
   Located within:       Colorado (CO), FIPS 08
   Location:             40.858586 N, 102.801195 W
   ZIP Codes (1990):     80726
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Crook, CO
    Crook