The active use or application of something, A ceremony that includes speeches, presentations, and other activities, Bodily exertion for the sake of keeping the organs and functions in a healthy state; hygienic activity, transitive verb_ To set in action; to cause to act, move, or make exertion; to give employment to; to put in action habitually or constantly; to school or train; to exert repeatedly; to busy, intransitive verb_ To execute the terms of (a stock option, for example), To alarm, worry, or anger; upset, To engage in exercise