<p><strong>Noun</strong></p><ul><li>a long, narrow, open receptacle, usually boxlike in shape, used chiefly to hold water or food for animals</li><li>any of several similarly shaped receptacles used for various commercial or household purposes</li><li>a channel or conduit for conveying water, as a gutter under the eaves of a building for carrying away rainwater</li><li>any long depression or hollow, as between two ridges or waves</li><li>Oceanography: a long, wide, and deep depression in the ocean floor having gently sloping sides, wider and shallower than a trench</li><li>Compare trench (def 4)</li><li>Meteorology: an elongated area of relatively low pressure</li><li>the lowest point, especially in an economic cycle</li></ul>