Passa¹

seeing, one who sees Thag.61 (see Morris, in J.P.T.S. 1885, 48).

cp. Sk. paśya, fr. passati

Passa²

masculine & neuter

1. side, flank MN.i.102; MN.iii.3; AN.v.18; Snp.422; Ja.i.264; Ja.iii.26. Pleonastic in piṭṭhi˚ (cp. E. backside) the back, loc. behind Ja.i.292; Pv-a.55.
2. (mountain-) slope, in Himavanta˚; Ja.i.218; Ja.v.396 (loc pasmani = passe C.).

Vedic pārśva to parśu & pṛṣṭi rib, perhaps also connected with pārṣṇi side of leg, see under paṇhi