...There was only a groove in the rough, pebbly surface, a grooveleft by the boat's keel... 
Various 「Astounding Stories, August, 1931」
... "It would take more 'n this to keel me over," he said, ignorant that he was lighting that terrible article, a Wheeling 'stogie'...
Rudyard Kipling 「"Captains Courageous"」
..."Disko, ye kape your spare eyes under the keel...
Rudyard Kipling 「"Captains Courageous"」
... It thrilled through him when he first felt the keel answer to his hand on the spokes and slide over the long hollows as the foresail scythed back and forth against the blue sky...
Rudyard Kipling 「"Captains Courageous"」
...The boat, as we got near her, was, I saw, keel upwards...
W. H. G. Kingston 「The African Trader」
...In the ostrich, the cassowary, and the apteryx, which run,but do not fly, the sternum has the form of a plate of boneslightly convex, but without a keel...
Édouard Cuyer 「Artistic Anatomy of Animals」
...Withthis disease they simply keel over and soon die...
Harry M. Lamon 「Ducks and Geese」
...What is desiredis a low down body which is flat in keel andwithout any folds of skin...
Harry M. Lamon 「Ducks and Geese」
...The other livingbirds were placed in the sub-class the members of which havea keel on the breast bone for the attachment of the wing-muscles...
John Albert Leach 「An Australian Bird Book」
...sonomae, in ridges on either side of tipless well-developed, keel higher; from E...
John A. White 「The Baculum in the Chipmunks of Western North America」
...sonomae, in ridges on either side oftip not enlarged, keel proportionally higher; from E...
John A. White 「The Baculum in the Chipmunks of Western North America」
...; ridgeson either side of tip strongly developed, partly obscuring keel fromside...
John A. White 「The Baculum in the Chipmunks of Western North America」
...The large size of the keel of the baculum in this species is distinctiveamong chipmunks of western North America...
John A. White 「The Baculum in the Chipmunks of Western North America」
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