<p><strong>Verb</strong></p><ul><li>(used without object) to plunge into water, especially headfirst.</li><li>to go below the surface of the water, as a submarine.</li><li>to plunge, fall, or descend through the air, into the earth, etc.: The acrobats dived into nets.</li><li>Aeronautics: (of an airplane) to descend rapidly.</li><li>to penetrate suddenly into something, as with the hand: to dive into one's purse.</li><li>to dart: to dive into a doorway.</li><li>to enter deeply or plunge into a subject, activity, etc.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to cause to plunge, submerge, or descend.</li><li>to insert quickly; plunge: He dived his hand into his pocket.</li></ul><p><strong>Noun</strong></p><ul><li>an act or instance of diving.</li><li>a jump or plunge into water, especially in a prescribed way from a diving board.</li><li>the vertical or nearly vertical descent of an airplane at a speed surpassing the possible speed of the same plane in level flight.</li><li>a submerging, as of a submarine or skin diver.</li><li>a dash, plunge, or lunge, as if throwing oneself at or into something: He made a dive for the football.</li><li>a sudden or sharp decline, as in stock prices.</li><li>Slang: a dingy or disreputable bar or nightclub: Grab a beer with some locals at the dive on the corner.</li><li>any shabby, run-down place, especially a residence.</li><li>Boxing: a false show of being knocked out, usually in a bout whose result has been prearranged: to take a dive in an early round.</li><li>Also called simulated contact.</li><li>Soccer: a dramatic fall or feigned injury intended to persuade officials to penalize the opposing team: His dive fooled the ref into giving his team a free kick.</li></ul>