<p><strong>Noun</strong></p><ul><li>something that temporarily quickens some vital process or the functional activity of some organ or part:</li><li>any food or beverage that stimulates, especially coffee, tea, or, in its initial effect, alcoholic liquor.</li><li>a stimulus or incentive.</li></ul><p><strong>Adjective</strong></p><ul><li>temporarily quickening some vital process or functional activity.</li><li>stimulating.</li></ul>