(a) Conferring benefit, of value or utility, beneficial, profitable; having power (to do sth. or bring sth. about), efficacious; also [quot. a1475 Rev.St.Bridget(3) 2nd], effective (against……
(a) Without contents, empty; also fig. and in fig. context; of a river: empty of water, etc.; of a pen: empty of ink
(b) of the stomach or part of the intestinal tract: without food, empty; of the……