apāṃnaptṛ

apā́ṃ-nápāt [RV.; VS.] or apāṃ-naptṛ [Pāṇ. iv, 2, 27] or apā́ṃ-garbha [VS.] or apo-naptṛ [Pāṇ. iv, 2, 27], m. ‘grandson of the waters’, N. of Agni or fire as sprung from water.