Lewis Short
bracchĭŏlum | brāch- (noun N) : (), , dim. bracchium.
* A small, delicate arm: puellulae, * Cat. 61, 181.
* Transf.
* A muscle in a horse's leg, Veg. 1, 25, 4 and 5; cf. id. 6, 1, 1; 6, 2, 2; 5, 27, 7; 5, 70, 2.
* The arm of a chair or seat, Vulg. 2 Par. 9, 18.
Charlton T. Lewis, Charles Short, A Latin Dictionary