The Collaborative International Dictionary of English v.0.48:

Craze \Craze\ (kr[=a]z), v. t. [imp. & p. p. Crazed
   (kr[=a]zd); p. pr. & vb. n. Crazing.] [OE. crasen to break,
   fr. Scand., perh. through OF.; cf. Sw. krasa to crackle,
   sl[*a] i kras, to break to pieces, F. ['e]craser to crush,
   fr. the Scand. Cf. Crash.]
   1. To break into pieces; to crush; to grind to powder. See
      Crase.
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            God, looking forth, will trouble all his host, And
            craze their chariot wheels.           --Milton.
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   2. To weaken; to impair; to render decrepit. [Obs.]
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            Till length of years,
            And sedentary numbness, craze my limbs. --Milton.
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   3. To derange the intellect of; to render insane.
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            Any man . . . that is crazed and out of his wits.
                                                  --Tilloston.
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            Grief hath crazed my wits.            --Shak.
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WordNet (r) 3.0 (2006):

crazed
    adj 1: driven insane [syn: crazed, deranged, half-crazed]