单词 | keel |
释义 | keel 1 (kēl) n. 1. Nautical a. The principal structural member of a boat or ship, running along the center of the hull from bow to stern, to which the ribs are attached. b. A projecting ridge or fin on the bottom of the hull of a boat or ship that improves directional control and is often weighted for added stability. 2. The principal structural member of an aircraft, resembling a ship's keel in shape and function. 3. A structure, such as the breastbone of a bird, that resembles a ship's keel in function or shape. 4. A pair of united petals in certain flowers, as those of many members of the pea family. intr. & tr.v. keeled, keel·ing, keels Phrasal Verb: Nautical To capsize or cause to capsize. keel over To collapse or fall into or as if into a faint. [Middle English kele, from Old Norse kjölr.] |
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