(1):

(n.) The practice of self-denial by depriving one's self of certain kinds of food or drink, especially of meat.

(2):

(n.) The act or practice of abstaining; voluntary forbearance of any action, especially the refraining from an indulgence of appetite, or from customary gratifications of animal or sensual propensities. Specifically, the practice of abstaining from intoxicating beverages, - called also total abstinence.