Lewis & Short

pŏlymĭtārĭus, a, um, [polymitus], of damask, highly wrought or finished: opus, Vulg. Exod. 36, 35.
Hence, subst.: pŏly-mĭtārĭus, ii, m., a damask-weaver, Ven. Carm. 5, 6 praef.; Vulg. Exod. 35, 35; 38, 23.