Backbone of a ship

•To cool; to skim or stir.•A brewer's cooling vat; a keelfat.•A longitudinal timber, or series of timbers scarfed together, extending from stem to stern along the bottom of a vessel. It is the principal timber of the vessel, and, by means of the ribs attached on each side, supports the vessel's frame. In an iron vessel, a combination of plates supplies the place of the keel of a wooden ship. See Illust. of Keelson.•Fig.: The whole ship.•A barge or lighter, used on the Type for carrying coal from Newcastle; also, a barge load of coal, twenty-one tons, four cwt.•The two lowest petals of the corolla of a papilionaceous flower, united and inclosing the stamens and pistil; a carina. See Carina.•A projecting ridge along the middle of a flat or curved surface.•To traverse with a keel; to navigate.•To turn up the keel; to show the bottom.

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