Pali āpa (āpo) (7)
According to Davids and Stede’s Pali-English Dictionary, āpa (āpo) refers to “water and (is) a philosophically technical term for cohesion, representative of one of the four great elements.” It is linguistically related to terms in other Indo-European languages such as Sanskrit ap, āp; Indo-Germanic *ap, *ab; Lithuanian ùpé; Old Prussian ape; Greek *Λπία (lpía), the name of the Peloponnesus; and Latin amnis. It traces its origin to the Tamil root ampu through the transformation of ampu > áp > āpa (āpo). The following words, related to Pali āpa (āpo), also originate from Tamil ampu.
āpakā, river. āpagā, a river. accharā, a celestial nymph. dīpa, an island, continent. paritta-dīpā, the smaller islands. anūpa, watery, moist; watery land, lowland.