Lewis & Short

subjŭgĭus, a, um, adj. [sub-jugum], of or belonging to the yoke, that is attached to the yoke: lora, Cato, R. R. 135, 5; Vitr. 10, 3, 3 Schneid. N. cr.
Subst.:
subjŭ-gĭa, ōrum, n. plur. (sc. lora), yoke-straps, Cato, R. R. 63.