<p><strong>Noun</strong></p><ul><li>habitual or customary performance; operation.</li><li>habit; custom.</li><li>repeated performance or systematic exercise for the purpose of acquiring skill or proficiency.</li><li>condition arrived at by experience or exercise.</li><li>the action or process of performing or doing something.</li><li>the exercise or pursuit of a profession or occupation, especially law or medicine.</li><li>the business of a professional person.</li><li>the established method of conducting legal proceedings.</li><li>plotting; intrigue; trickery.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to perform or do habitually or usually.</li><li>to follow or observe habitually or customarily.</li><li>to exercise or pursue as a profession, art, or occupation.</li><li>to perform or do repeatedly in order to acquire skill or proficiency.</li><li>to train or drill (a person, animal, etc.) in something in order to give proficiency.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to do something habitually or as a practice.</li><li>to pursue a profession, especially law or medicine.</li><li>to exercise oneself by repeated performance in order to acquire skill.</li><li>to plot or conspire.</li></ul>