He used his spare time in having a useful avocation.

A pair of these magnificent birds were actively employed in their useful avocation of hunting reptiles, which they chased with wonderful speed.

The prince might gain it if he devoted himself earnestly, not merely in a half-absent dilettante fashion, to some art, science, or useful avocation.

Steps had been taken to convert felons into good colonists, to educate their children, and to train them for useful avocations.