सागरगासुतsāgaragāsutam. "son of Gan3ga1 गङ्गा", metron. of Bhi1shma भीष्म ib.
masculine gender "son of Gan3ga1 गङ्गा", metronymic of Bhi1shma भीष्म ibidem
कोशःDictionaries
Every entry for a word in Apte, Monier-Williams, Macdonell and the Dhātupāṭha, with their abbreviations spelled out, and an analysis of its forms.