noun a standard against which other conditions can be compared in a scientific experiment
noun the state that exists when one person or group has power over another
noun discipline in personal and social activities
noun a mechanism that controls the operation of a machine
verb exercise authoritative control or power over
verb lessen the intensity of; temper; hold in restraint; hold or keep within limits
verb handle and cause to function
verb maintain influence over (others or oneself) skillfully, usually to one's advantage
verb check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard
verb place under restrictions; limit access to by law
verb be careful or certain to do something; make certain of something
verb have a firm understanding or knowledge of; be on top of
Source: WordNet 3.1, Princeton University