Source : Webster's Revised Unabridged Dictionary (1913)

Aino \Ai"no\, n. [Said to be the native name for man.]
   One of a peculiar race inhabiting Yesso, the Kooril Islands
   etc., in the northern part of the empire of Japan, by some
   supposed to have been the progenitors of the Japanese. The
   Ainos are stout and short, with hairy bodies.