Mūsī (feminine) [Vedic mūṣ and mūḥ mouse or rat; cf. Latin mūs Greek μῦς, Old High German mūs = English mouse. Not to muṣ to steal, but to same root as Latin moveo, to move] a mouse S II 270 (mudu° a tender, little m.).
(fem, fem) mouse; rat Construction: √mus > mūs + *ī