trijugus

trijugus [cf. CL quadrijugus], yoked three abreast. ~us on ðreo geght Catal. MSS AS 442; hec quadriga ‥ ubi quatuor trahunt equi, et ab istis dicitur bijugus et ~us ‥ quibus nominibus ipsi equi vocantur Osb. Glouc. Deriv. 280.