The Collaborative International Dictionary of English v.0.48:

Streak \Streak\, v. t. [imp. & p. p. Streaked; p. pr. & vb. n.
   Streaking.]
   1. To form streaks or stripes in or on; to stripe; to
      variegate with lines of a different color, or of different
      colors.
      [1913 Webster]

            A mule . . . streaked and dappled with white and
            black.                                --Sandys.
      [1913 Webster]

            Now streaked and glowing with the morning red.
                                                  --Prior.
      [1913 Webster]

   2. With it as an object: To run swiftly. [Colloq.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Streak \Streak\, v. t. [Cf. Stretch, Streek.]
   To stretch; to extend; hence, to lay out, as a dead body.
   [Obs. or Prov. Eng. & Scot.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Streak \Streak\, n. [OE. streke; akin to D. streek a line,
   stroke, G. strich, AS. strica, Sw. strek, Dan. streg, Goth.
   stricks, and E. strike, stroke. See Strike, Stroke, n.,
   and cf. Strake.]
   1. A line or long mark of a different color from the ground;
      a stripe; a vein.
      [1913 Webster]

            What mean those colored streaks in heaven? --Milton.
      [1913 Webster]

   2. (Shipbuilding) A strake.
      [1913 Webster]

   3. (Min.) The fine powder or mark yielded by a mineral when
      scratched or rubbed against a harder surface, the color of
      which is sometimes a distinguishing character.
      [1913 Webster]

   4. The rung or round of a ladder. [Obs.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

streak
    n 1: an unbroken series of events; "had a streak of bad luck";
         "Nicklaus had a run of birdies" [syn: streak, run]
    2: a distinctive characteristic; "he has a stubborn streak"; "a
       streak of wildness"
    3: a narrow marking of a different color or texture from the
       background; "a green toad with small black stripes or bars";
       "may the Stars and Stripes forever wave" [syn: stripe,
       streak, bar]
    4: a sudden flash (as of lightning)
    v 1: move quickly in a straight line; "The plane streaked across
         the sky"
    2: run naked in a public place
    3: mark with spots or blotches of different color or shades of
       color as if stained [syn: mottle, streak, blotch]

Moby Thesaurus II by Grady Ward, 1.0:

319 Moby Thesaurus words for "streak":
   X ray, actinic ray, actinism, animus, antelope, aptitude, arrow,
   atomic beam, atomic ray, band, bar, beam, beam of light, belt,
   bent, bespangle, bespeckle, bespot, bezel, bias, blaze,
   blaze a trail, blemish, blotch, blue darter, blue streak,
   body-build, bolt, brand, canal, canalize, cannonball, carve, cast,
   chalk, chalk up, chamfer, channel, character, characteristic,
   characteristics, chase, check, check off, checker, chink, chisel,
   cicatrize, complexion, composition, constituents, constitution,
   corrugate, corrugation, courser, crack, cranny, crasis, craze,
   crimp, cross-hatching, cut, dado, dapple, dart, dash, daub, define,
   delimit, delineation, demarcate, dharma, diagonal, diathesis, dike,
   discolor, disposition, ditch, dot, dotted line, eagle,
   eccentricity, electricity, engrave, engraving, ethos,
   express train, fiber, flake, flash, fleck, flute, fluting, fly,
   frame, freckle, furrow, gamma ray, gash, gazelle, genius, gleam,
   goffer, gouge, grain, greased lightning, greyhound, groove, gruel,
   gully, habit, hachure, hairline, hare, harlequin, hasten, hatch,
   hatching, hue, humor, humors, hurry, hurtle, idiosyncrasy, ilk,
   impress, imprint, incise, incision, inclination, individualism,
   infrared ray, invisible radiation, iris, jet plane, kidney, kind,
   lath, layer, leam, leaning, light, lightning, line, lineation,
   list, maculate, make, make a mark, makeup, marble, marbleize, mark,
   mark off, mark out, mental set, mercury, mere shadow, mettle,
   microgroove, mind, mind-set, mold, motley, mottle, nature, nick,
   notch, paper, patch, pencil, pepper, period, photon, physique,
   pleat, plow, point, polychrome, polychromize, predilection,
   predisposition, preference, prick, print, proclivity, propensity,
   property, punch, punctuate, puncture, quality, quicksilver, rabbet,
   race, radiation, radiorays, rail, rainbow, rake, ray, ray of light,
   ribbon, ribbon of light, riddle, rifle, rifling, rocket, ruck, run,
   rush, rut, scar, scared rabbit, scarify, scoot, score, scotch,
   scratch, seal, seam, set, shadow, shaving, shot, skeleton, slant,
   slash, slat, slip, slit, smear, solar rays, somatotype, sort, soup,
   spangle, spate, speck, speckle, speed, spell, spirit, splinter,
   splotch, spot, sprinkle, sprint, stain, stamp, stigmatize, stipple,
   strain, strake, stratum, streak of lightning, streaking, stream,
   stream of light, streamer, stretch, stria, striate, striation,
   striature, striga, striola, strip, stripe, striped snake, striping,
   stroke, stud, sublineation, suchness, sulcation, sulcus, swallow,
   system, tattoo, tear, temper, temperament, tendency, tenor,
   tessellate, thought, thunderbolt, tick, tick off, tone, torrent,
   touch, trace, trench, trough, turn, turn of mind, twist, type,
   ultraviolet ray, underline, underlining, underscore, underscoring,
   variegate, vein, violet ray, virgule, wafer, warp, way,
   well-worn groove, whistle, whiz, wind, wrinkle, zip, zoom