A hobby or minor occupation pursued in addition to one's main occupation. Photography became his avocation, providing a creative outlet outside of his work as an accountant.
(archaic) A distraction or diversion from one's regular duties or business. The loud conversation at the next table proved an unwelcome avocation from his writing.
(archaic) One's regular occupation, profession, or calling. In earlier centuries, the clergy was considered an honorable avocation.