ARCH Copy link • ARCH 1. arcus (general term): fornix (arch, arch-way; both used of triumphal arches). An arched roof, camera (camera lapideis fornicibus vincta). Observe, Cic. censures Ennius’s fornices caeli (“the arch of heaven”) as a badly chosen image. 2. v. arcuare (Liv.): camerare: concamerare (to arch over; cover with a vaulted roof: camarare, Plin. only; nidos camerare ab imbri): confomicare (Vitr., arch over). To be arched, arcuari (general term, to be arched or curved): fomicatim curvari (Plin.): concamerari (to be arched over; covered with an arched roof). Arched, arcuatus: in formam arcus incurvus (Mela): in apsida curvatus (Plin.): cameratus, concameratus (arched or vaulted over). Sometimes convexus, gibbus (swelling out). 3. a., petulans; lascivus.