Entry 1 sense Webster, 1913 Domina /dōm-ēn'-ə/ · Dom·i·na · IPA /ˈdɒmɪnə/ 01 n. Lady; a lady; -- a title formerly given to noble ladies who held a barony in their own right. 1. Lady; a lady; -- a title formerly given to noble ladies who held a barony in their own right.(O. Eng. Law)