Lewis Short
buccŭla | būcŭla (noun F) : (), , dim. bucca.
* A little cheek or mouth, * Suet. Galb. 4: pressa Cupidinis buccula,App. M. 6, p. 182, 17; 3, p. 137, 40; Arn. 2, p. 73.
* In milit. lang.
* The beaver, that part of a helmet which covers the mouth and cheeks, παραγναθίς: bucculas tergere,Liv. 44, 34, 8; Juv. 10, 134; Capitol. Max. Jun. 3; Cod. Th. 10, 22, 1.
* Bucculae, two cheeks, one on each side of the channel in which the arrow of the catapulta was placed, Vitr. 10, 15, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary