from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. Simple past tense and past participle of keel.
- adj. Furnished with a keel, especially a keel of a specified type
from the GNU version of the Collaborative International Dictionary of English
- adj. Keel-shaped; having a longitudinal prominence on the back.
- adj. Having a median ridge; carinate.
from The Century Dictionary and Cyclopedia
- Having a keel; furnished with or exhibiting a longitudinal ridge resembling the keel of a boat, as a leaf or other object; ridged lengthwise in the middle underneath, as the sternum of a carinate bird (see cut under carinate); carinated.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having a ridge or shaped like a ridge or suggesting the keel of a ship
Sorry, no etymologies found.
Although he makes the point that the periphery is "hardly to be called keeled", to me "carinated", "angular" and "keeled" all mean more or less the same thing, especially when the degree of carination is variable.
Its bays are square, and the groin ribs consist each of three round mouldings, of which the most prominent is 'keeled';  but what is most remarkable is that there are also ridge-ribs, which are not usually found before the thirteenth century, and it has been suggested  that this is the earliest instance of their employment.
He looked kind of keeled over, his head on a cement step.
It's all right, no one keeled over; we got the front and back doors open quick enough that the smoke alarms didn't go off, though it was chilly for a bit as the cold air rushed in.
He has never been partial to the supports that, like the legs of daddy longlegs spiders, angle out from lower decks to hold them upright while their keels rest on the forest floor, but there was no better way to park a sharp-keeled ship on land.
I keep participating in the dialogue - I'm mostly even-keeled and not upset when I do, or I wouldn't.
Jian Ghomeshi is entertaining, intelligent and even keeled.
"He pointed at the television and said 'He's not technically President,' and then he keeled over," said pal Jim Lawrence today.
Now, if an even-keeled non-partisan person had written a chapter, I'd be taken aback by it, but the fact that greenie was involved really has no effect on me.
As they gear up to release their debut album 'What Did You Expect From The Vaccines?' the foursome are keen on staying even-keeled.