áp n. (gen. apás), work (according to [NBD.]), [RV. i, 151, 4.]
áp f. (in Ved. used in sing. and pl., but in the classical language only in pl., ā́pas) water
air, the intermediate region, [Naigh.]
the star δ Virginis
the Waters considered as divinities. ifc. may become apa or īpa, ūpa after i- and u- stems respectively.
[cf. Lat. aqua; Goth. ahva, ‘a river’; Old Germ. aha, and affa at the end of compounds; Lith. uppê, ‘a river’; perhaps Lat. amnis, ‘a river’, for apnis cf. also ἀϕρός]