vā́tāpi mfn. (āpi fr. ā-√ pyai) wind-swelled, fermenting, [RV. i, 187, 8]
vā́tāpi m. (fr. āpi, ‘friend, ally’) ‘having the wind as an ally’, N. of an Asura (son of Hrāda; he is said to have been devoured by the Muni Agastya), [MBh.]; [R.] &c. (also °pin)