WordNet (r) 3.0 (2006):

strawberry mark
    n 1: a soft red birthmark [syn: strawberry, strawberry mark,
         hemangioma simplex]

Moby Thesaurus II by Grady Ward, 1.0:

100 Moby Thesaurus words for "strawberry mark":
   birthmark, blackhead, blaze, bleb, blemish, blister, blotch, brand,
   bulla, caste mark, check, checkmark, cicatrix, comedo, crack,
   crater, craze, cut, dapple, defacement, defect, deformation,
   deformity, discoloration, disfiguration, disfigurement, distortion,
   dot, earmark, engraving, fault, flaw, fleck, flick, freckle, gash,
   graving, hack, hemangioma, hickey, jot, keloid, kink, lentigo,
   macula, mark, marking, milium, mole, mottle, needle scar, nevus,
   nick, notch, patch, pimple, pit, pock, pockmark, point, polka dot,
   port-wine mark, port-wine stain, prick, puncture, pustule, rift,
   scab, scar, scarification, score, scotch, scratch, scratching,
   sebaceous cyst, speck, speckle, splash, split, splotch, spot,
   stain, stigma, sty, tattoo, tattoo mark, tick, tittle, track,
   twist, verruca, vesicle, wale, warp, wart, watermark, weal, welt,
   wen, whitehead