Caucasian

The definition of Caucasian is white-skinned or of European descent.

(adjective)

A person who is white and who has European ancestors is an example of someone who would be described as a Caucasian person.

A Caucasian is defined as a white person of European descent.

(noun)

A white person of European descent is an example of a Caucasian.

See Caucasian in Webster's New World College Dictionary

adjective

of the Caucasus or its peoples or cultures
Caucasoid
designating or of the two or more independent families of languages spoken in the Caucasus

noun

See Caucasian in American Heritage Dictionary 4

adjective

a. Anthropology Of or being a human racial classification distinguished especially by very light to brown skin pigmentation and straight to wavy or curly hair, and including peoples indigenous to Europe, northern Africa, western Asia, and India. See Usage Note at race¹.
b. Of or relating to a racial group having white skin, especially one of European origin; white.
Of or relating to the Caucasus region or its peoples, languages, or cultures.
Of or relating to a group of three language families spoken in the region of the Caucasus mountains, including Chechen, Abkhaz, and the Kartvelian languages.

noun