keel

IPA: kˈiɫ

(nautical) A large beam along the underside of a ship’s hull from bow to stern.
(nautical) A rigid, flat piece of material anchored to the lowest part of the hull of a ship to give it greater control and stability.
(aeronautics) In a dirigible, a construction similar in form and use to a ship's keel; in an aeroplane, a fin or fixed surface employed to increase stability and to hold the machine to its course.
(by extension) The rigid bottom part of something else, especially an iceberg.
(nautical) A type of flat-bottomed boat.
(zoology) The periphery of a whorl extended to form a more or less flattened plate; a prominent spiral ridge.
(botany) The two lowest petals of the corolla of a papilionaceous flower, united and enclosing the stamens and pistil; a carina.
(brewing) A broad, flat vessel used for cooling liquids; a brewer's cooling vat; a keelfat.
(Scotland) Red chalk; ruddle.

(intransitive, followed by "over") to collapse, to fall
To traverse with a keel; to navigate.
To turn up the keel; to show the bottom.
(transitive, obsolete) To cool; make cool; to cool by stirring or skimming in order to keep from boiling over.
(transitive, obsolete) To moderate the ardour or intensity of; assuage; to appease, pacify, or lessen.
(intransitive, obsolete) To become cool; cool down.
(Scotland, transitive) To mark with ruddle.
(humorous, nonstandard) Pronunciation spelling of kill. [(transitive) To put to death; to extinguish the life of.]

Examples of "keel" in Sentences

It has a full keel with a cutaway forefoot.
Keel bolts are used to hold on the keel of a sail boat.
The lower side of the leaf is smooth, glossy and keeled.
The forefoot being the junction between the keel and the stem.
The further apart the deck and the keel, the stronger the design.
The keel is molded as part of the hull and the ballast is poured in.
The sled is towed by a line attached to the front end of the keel rib.
In general there is the drop keel and the swing keel with variations on each.
Adrian Presland, the welder in charge of the keel of Excalibur, was acquitted.
Internally, the posterior part of the notochord segregates from the neural keel.