Pertaining to the face: as, facial expression: an epithet specifically applied in anatomy to many structures which compose this part of the head: as, a facial artery, bone, muscle, nerve, vein, etc.Pertaining to some part of an animal like or called the face; specifically, in entomology, pertaining to the front of the head, or to the part distinguished as the face in the various orders.Common, a short trunk, formed by the union of the anterior facial and anterior division of temporomaxillary to empty into the jugular at the level of the hyoid bone.Deep, a vein passing from the pterygoid plexus to empty into the anterior facial below the malar bone. Also called anterior internal maxillary vein.Posterior, the temporomaxillary vein.Transverse, one of two veins passing over the surface of the masseter muscle to empty into the common temporal vein. See basifacial, craniofacial.