WordNet sense 1 (a member of the Caucasoid race):

white person

WordNet sense 2 (a number of languages spoken in the Caucasus that have no known affiliations to languages spoken elsewhere):

Caucasian language

WordNet sense 3 (of or relating to the geographical region of Caucasia):

Caucasic

WordNet sense 4 (of or relating to Caucasian people):

caucasoid

WordNet sense 5 (of or belonging to a racial group having light skin coloration):

white