Lewis & Short

offūcĭa, ae, f. [ob-fucus], a paint, wash for the face (ante- and post-class.).

  1. I. Lit.: pigmentum ullum, neque cerussam Melinumve neque aliam ullam offuciam, Plaut. Most. 1, 3, 107.
  2. II. Trop., a trick, delusion, Plaut. Capt. 3, 4, 123: id praestigiarum atque offuciarum genus, delusions, Gell. 14, 1, 2.