keellessadj.
/ˈkiːlləs/, U.S. /ˈki(l)ləs/ 1. Of a boat: Having no keel.
ΘΚΠ
society > travel > travel by water > vessel, ship, or boat > vessel of specific construction or shape > [adjective] > having or not having a keel
keeled1848
unkeeled1848
centreboard1849
keelless1879
1879 Daily News 7 Apr. 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.
1896 Westm. Gaz. 20 June 5/2 I was out since six o'clock in my shallow keelless boat.
2. Zoology. Having no keel along the breast-bone.
ΘΚΠ
the world > animals > animal body > general parts > constituent materials > [adjective] > having no ridge along breastbone
keelless1884
1884 G. Allen in Longman's Mag. Jan. 293 Keelless and often almost wingless birds.
1886 Cent. Mag. 31 358 This great order of the Ratitæ, or keelless birds.
1895 Pop. Sci. Monthly Apr. 762 All had keelless sterna.
This entry has not yet been fully updated (first published 1901; most recently modified version published online March 2022).
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adj.1879