śiśu—mā́ra m. ‘child-killer’, the Gangetic porpoise or dolphin, Delphinus Gangeticus, [VS.] &c. &c.
an alligator, [Suśr.]
a collection of stars supposed to resemble a dolphin (and held to be a form of Viṣṇu; also personified as a son of Doṣa and Śarvarī, or as father of Bhrami, wife of Dhruva), [MBh.]; [Pur.]