Akademik

Kay
Kay f, m
English: 1 (f.) Pet form of any of the various female names beginning with the letter K- (cf. DEE (SEE Dee) and JAY (SEE Jay)), most notably KATHERINE (SEE Katherine) and its variants.
2 (m.) Comparatively rare male name, which presumably originated in honour of the Arthurian knight so called, although Sir Kay is not a particularly attractive character. His name seems to be a Celticized form of Latin Gaius, an old Roman given name of uncertain derivation (cf. CAYO (SEE Cayo)).

First names dictionary. 2012.