<p><strong>Adverb</strong></p><ul><li>from higher to lower; in descending direction or order; toward, into, or in a lower position: to come down the ladder.</li><li>on or to the ground, floor, or bottom: He fell down.</li><li>to or in a sitting or lying position.</li><li>to or in a position, area, or district considered lower, especially from a geographical or cartographic standpoint: We drove from San Francisco down to Los Angeles.</li><li>to or at a lower value or rate.</li><li>to a lesser pitch or volume: Turn down the radio.</li><li>in or to a calmer, less active, or less prominent state: The wind died down.</li><li>from an earlier to a later time: from the 17th century down to the present.</li><li>from a greater to a lesser strength, amount, etc.: to water down liquor.</li><li>in an attitude of earnest application: to get down to work.</li><li>on paper or in a book: Write down the address.</li><li>in cash at the time of purchase; at once: We paid $50 down and $20 a month.</li><li>to the point of defeat, submission, inactivity, etc.: They shouted down the opposition.</li><li>in or into a fixed or supine position: They tied down the struggling animal.</li><li>to the source or actual position: The dogs tracked down the bear.</li><li>into a condition of ill health: He's come down with a cold.</li><li>in or into a lower status or condition: kept down by lack of education.</li><li>Nautical. toward the lee side, so as to turn a vessel to windward: Put the helm down!</li><li>Slang. on toast (as used in ordering a sandwich at a lunch counter or restaurant): Give me a tuna down.</li></ul><p><strong>Preposition</strong></p><ul><li>in a descending or more remote direction or place on, over, or along: They ran off down the street.</li></ul><p><strong>Adjective</strong></p><ul><li>downward; going or directed downward: the down escalator.</li><li>being at a low position or on the ground, floor, or bottom.</li><li>toward the south, a business district, etc.</li><li>associated with or serving traffic, transportation, or the like, directed toward the south, a business district, etc.: the down platform.</li><li>downcast; depressed; dejected: You seem very down today.</li><li>ailing, especially, sick and bedridden: He's been down with a bad cold.</li><li>being the portion of the full price, as of an article bought on the installment plan, that is paid at the time of purchase or delivery: a payment of $200 down.</li><li>Football. (of the ball) not in play.</li><li>Slang. agreeing, supporting, or understanding: I'm totally down with that. He's down with those kids.</li><li>sophisticated or hip; cool: That music is down.</li><li>behind an opponent or opponents in points, games, etc.: The team won the pennant despite having been down three games in the final week of play.</li><li>Baseball. out.</li><li>losing or having lost the amount indicated, especially at gambling: After an hour at poker, he was down $10.</li><li>having placed one's bet: Are you down for the fourth race?</li><li>finished, done, considered, or taken care of: five down and one to go.</li><li>out of order; not functioning: The computer has been down all day.</li></ul><p><strong>Noun</strong></p><ul><li>a downward movement; descent.</li><li>a turn for the worse; reverse: The business cycle experienced a sudden down.</li><li>Football. one of a series of four plays during which a team must advance the ball at least 10 yards (9 meters) to keep possession of it.</li><li>the declaring of the ball as down or out of play, or the play immediately preceding this.</li><li>Slang. an order of toast at a lunch counter or restaurant.</li><li>Slang. downer (defs 1a, 1b).</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to put, knock, or throw down; subdue: He downed his opponent in the third round.</li><li>to drink down, especially quickly or in one gulp: to down a tankard of ale.</li><li>Informal. to defeat in a game or contest: The Mets downed the Dodgers in today's game.</li><li>to cause to fall from a height, especially by shooting: Antiaircraft guns downed ten bombers.</li><li>(used without object) to go down; fall.</li></ul><p><strong>Interjection</strong></p><ul><li>(used as a command to a dog to stop attacking, to stop jumping on someone, to get off a couch or chair, etc.): Down, Rover!</li><li>(used as a command or warning to duck, take cover, or the like): Down! They're starting to shoot!</li></ul>