a small gable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for gablet
Gablet, small gable-shaped carved panels frequently used in Gothic stonework for apex stones, and in spires, &c.
The swallows made a second long sweep, and as they neared the gablet again, hissed forth, "Singly were surer."Fifty-Two Stories For Girls|Various