keel
Noun · VerbWordNet 3.0
Noun (3)
- a projection or ridge that suggests a keel
- the median ridge on the breastbone of birds that fly
- one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
Webster's Dictionary (GCIDE)
While greasy Joan doth keel the pot. --Shak. [1913 Webster]
1.(Shipbuilding) 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. [1913 Webster]
2.Fig.: The whole ship. [1913 Webster]
3.A barge or lighter, used on the Tyne for carrying coal from Newcastle; also, a barge load of coal, twenty-one tons, four cwt. [Eng.] [1913 Webster]
4.(Bot.) The two lowest petals of the corolla of a papilionaceous flower, united and inclosing the stamens and pistil; a carina. See Carina. [1913 Webster]
5.(Nat. Hist.) A projecting ridge along the middle of a flat or curved surface. [1913 Webster]
6.(Aeronautics) In a dirigible, a construction similar in form and use to a ship's keel; in an a["e]roplane, a fin or fixed surface employed to increase stability and to hold the machine to its course. [Webster 1913 Suppl.]
Bilge keel (Naut.), a keel peculiar to ironclad vessels, extending only a portion of the length of the vessel under the bilges. --Ham. Nav. Encyc.
False keel. See under False.
Keel boat. (a) A covered freight boat, with a keel, but no sails, used on Western rivers. [U. S.] (b) A low, flat-bottomed freight boat. See Keel, n., 3.
Keel piece, one of the timbers or sections of which a keel is composed.
On even keel, in a level or horizontal position, so that the draught of water at the stern and the bow is the same. --Ham. Nav. Encyc.
On an even keel a. & adv., steady; balanced; steadily. [1913 Webster]
1.To traverse with a keel; to navigate. [1913 Webster]
2.To turn up the keel; to show the bottom. [1913 Webster]
To keel over, to upset; to capsize. [Colloq.] [1913 Webster]