from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a member of the Japanese people living on the Ryukyu Islands southwest of Japan
- n. the language (related to Japanese) that is spoken by the people of the Ryukyu Islands
Sorry, no etymologies found.
Off the top of my head I can't remember which, exactly, but I think the Okinawan versions of Japanese i.e., as opposed to ryukyuan is one such dialect.