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keel1

[keel] /kil/
noun
1.
Nautical. a central fore-and-aft structural member in the bottom of a hull, extending from the stem to the sternpost and having the floors or frames attached to it, usually at right angles: sometimes projecting from the bottom of the hull to provide stability.
2.
Literary. a ship or boat.
3.
a part corresponding to a ship's keel in some other structure, as in a dirigible balloon.
4.
(initial capital letter) Astronomy. the constellation Carina.
5.
Botany, Zoology. a longitudinal ridge, as on a leaf or bone; a carina.
6.
Also called brace molding. Architecture. a projecting molding the profile of which consists of two ogees symmetrically disposed about an arris or fillet.
verb (used with object), verb (used without object)
7.
to turn or upset so as to bring the wrong side or part uppermost.
Verb phrases
8.
keel over,
  1. to capsize or overturn.
  2. to fall as in a faint:
    Several cadets keeled over from the heat during the parade.
Idioms
9.
on an even keel, in a state of balance; steady; steadily:
The affairs of state are seldom on an even keel for long.
Origin
1325-1375
1325-75; 1895-1900 for def 8; Middle English kele < Old Norse kjǫlr; cognate with Old English cēol keel, ship; see keel2
Related forms
keeled, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for keels over

keel1

/kiːl/
noun
1.
one of the main longitudinal structural members of a vessel to which the frames are fastened and that may extend into the water to provide lateral stability
2.
on an even keel, well-balanced; steady
3.
any structure corresponding to or resembling the keel of a ship, such as the central member along the bottom of an aircraft fuselage
4.
(biology) a ridgelike part; carina
5.
a poetic word for ship
verb
6.
to capsize
See also keel over
Derived Forms
keel-less, adjective
Word Origin
C14: from Old Norse kjölr; related to Middle Dutch kiel,keel²

keel2

/kiːl/
noun (Eastern Brit, dialect)
1.
a flat-bottomed vessel, esp one used for carrying coal
2.
a measure of coal equal to about 21 tons
Word Origin
C14 kele, from Middle Dutch kiel; compare Old English cēol ship

keel3

/kiːl/
noun
1.
red ochre stain used for marking sheep, timber, etc
verb (transitive)
2.
to mark with this stain
Word Origin
Old English cēlan, from cōlcool

keel4

/kiːl/
verb
1.
an archaic word for cool
Word Origin
C15: probably from Scottish Gaelic cīl

keel5

/kiːl/
noun
1.
a fatal disease of young ducks, characterized by intestinal bleeding caused by Salmonella bacteria
Word Origin
C19: from keel1; see keel over
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for keels over
keel
"lowest timber of a ship or boat," mid-14c., from O.N. kjölr "keel," from P.Gmc. *keluz, of uncertain origin. Etymologists say this is unconnected with the root of M.Du. kiel "ship," O.E. ceol "ship's prow," O.H.G. kiel, Ger. Kiel "ship," but the two words have influenced each other. This other word is said to be from P.Gmc. *keula, from PIE *geul- "rounded vessel." Keel still is used locally in England and U.S. for "flat-bottomed boat," especially on the Tyne. To keel over (1876) is from the nautical image of a ship turning keel-up. Keelhaul is 17c. from Du. kielhalen "to haul under the keel," an old punishment. The verb is 1838, Amer.Eng., from the noun.
Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with keels over
In addition to the idiom beginning with keel also see: on an even keel
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Word Value for keels

9
10
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