keel over

[keel] Origin

keel

1[keel]
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.
EXPAND
6.
Also called brace molding. Architecture. a projecting molding the profile of which consists of two ogees symmetrically disposed about an arris or fillet.
COLLAPSE
verb (used with object), verb (used without object)
7.
to turn or upset so as to bring the wrong side or part uppermost.

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Keel over is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a chattering or flighty, light-headed person.
8.
keel over,
a.
to capsize or overturn.
b.
to fall as in a faint: Several cadets keeled over from the heat during the parade.
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:
1325–75; 1895–1900 for def. 8; Middle English kele < Old Norse kjǫlr; cognate with Old English cēol keel, ship; see keel2

keeled, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Collins
World English Dictionary
keel over
 
vb
1.  to turn upside down; capsize
2.  informal (intr) to collapse suddenly

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

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
EXPAND
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.
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Idioms & Phrases

keel over

Collapse, as if in a faint; also, faint. For example, When she heard the awful news, she keeled over. This term alludes to a vessel rolling on its keel and capsizing. [Mid-1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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