ghasati : [ghas + a] eats; consumes.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Ghasati [Vedic grasati & *ghasti, pp. grasta, cp. Gr. gra/w to gnaw, gra/stis fodder, Lat. gramen grass] to eat J iii.210; ppr. ghasamāna Vin ii.201; Th 1, 749. -- Cp. ghasa, ghasta & ghāsa. See also jaddhu. Desid. jighacchati.

Pali-English Dictionary, TW Rhys Davids, William Stede,