[f. L. aqua water + bibĕre to drink.] A water-drinker.
1731. Bailey, Aquabibe, a water drinker.
1883. Pall Mall G., 5 Feb., 11/2. Our worthy friend [Water-drinker] might be known henceforth as an aquabibist, or, if he prefers three syllables, aquabib.