Troughs meaning : A long, narrow container, open on top, for feeding or watering animals. Any similarly shaped container. A short, narrow canal designed to hold water until it drains or evaporates. A gutter under the eaves of a building; an eaves trough. A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel. A long, narrow depression between waves or ridges; the low portion of a wave cycle. A linear atmospheric depression associated with a weather front.