keelless

English

Etymology

From keel +‎ -less.

Adjective

keelless (not comparable)

1. (Of a water craft) having no keel.
   • 1914, Sven Anders Hedin, From Pole to Pole‎^[1]:

     Every vessel had several keelless whale-boats, pointed at both bow and stern, so that they could be rowed forwards or backwards.

2. (Of a bird) having no keel on the sternum; acarinate.