a. [f. KEEL sb.1 + -LESS.]

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  1.  Of a boat: Having no keel.

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1879.  Daily News, 7 April, 3/3. The worst crew that either University has sent to Putney since the days when keelless boats first came into use, just 22 years ago.

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1896.  Westm. Gaz., 20 June, 5/2. I was out since six o’clock in my shallow keelless boat.

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  2.  Zool. Having no keel along the breast-bone.

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1884.  G. Allen, in Longm. Mag., Jan., 293. Keelless and often almost wingless birds.

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1886.  R. W. Shufeldt, in Century Mag., XXXI. 358/1. This great order of the Ratitæ, or keelless birds.

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1895.  Pop. Sci. Monthly, April, 762. All had keelless sterna.

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