buttocky

From buttock +‎ -y.

buttocky (comparative more buttocky, superlative most buttocky)

1. Having large or prominent buttocks.
   • 1963, Garry Allighan, The 65th Defendant, page 112:

     That his wealth was blood-stained added to his glamour and certainly did not disturb the avaricious mind of any shebeen queen as she plied liquor to buttocky girls dancing the kwela in her shanty-saloon.

   • 1997, David Madsen, Confessions of a Flesh-eater, page 109:

     […] he is overweight: flabby, paunchy, buttocky.