[thirst] n [ME, fr. OE thurst; akin to OHG durst thirst, L torrere to dry, parch, Gk tersesthai to become dry] (bef. 12c) 1 a: a sensation of dryness in the mouth and throat associated with a desire for liquids; also: the bodily condition (as of dehydration) that induces this sensation b: a desire or need to drink
2: an ardent desire: craving, longing
[2]thirst vi (bef. 12c) 1: to feel thirsty: suffer thirst
2: to crave vehemently and urgently syn see long -- thirst.er n