a. 1. Of or pertaining to the Caucasus, a mountainous region between the Black and Caspian seas. [ 1913 Webster ]
2. Of or pertaining to the white races of mankind, of whom the people about Mount Caucasus were formerly taken as the type. [ 1913 Webster ]
n. 1. A native or inhabitant of the Caucasus, esp. a Circassian or Georgian. [ 1913 Webster ]
2. A member of any of the white races of mankind. [ 1913 Webster ]