Rhomboid

(rōm'boid), n. [Fr. rhomboïde, Gr. ῥομβοειδής, from ῥόμβος, rhomb, and εἶδος, shape.] (Geom.) An oblique-angled parallelogram like a rhomb, but having only the opposite sides equal, the length and width being different. Hutton.

a. The same as RHOM-BOIDAL.

Rhomboid muscle (Anat.), a muscle, so called from its shape, which arises in the spine, and is inserted into the posterior or inner edge of the scapula.