E. रु, उकक् aff.; or रु to weep, कु aff., and the final vowel changed to उव; also with कन् added रुवुक and with the first or second vowel made long, रूवुक and रुवूक; also as differently derived, उरुवूक .
ROOTS:
रु उकक् रु कु उव; कन् रुवुक रूवुक रुवूक; उरुवूक .