WordNet sense 1 (a physician who specializes in psychiatry):

psychiatrist, head-shrinker

WordNet sense 2 (draw back, as with fear or pain):

cringe, flinch, funk, quail, recoil, wince, squinch, recoil

WordNet sense 3 (wither, as with a loss of moisture):

shrivel, wither, shrivel up

WordNet sense 4 (reduce in size; reduce physically):

reduce

WordNet sense 5 (become smaller or draw together):

contract, contract