John W. Mollett, An Illustrated Dictionary of Words used in Art and Archaeology (1883)
“ Cubit (Gr. πῆχυς, Lat. cubitus, an elbow) . A measure of length among the Egyptians, Greeks, and Romans. In Egypt there were two cubits; the natural cubit, or small cubit, was equal to 18 inches (6 palms or 24 fingers) ; the royal cubit to 21 inches (7 palms or 28 fingers) . Each of the subdivisions of the cubit was consecrated to a divinity. The Greek cubit was equal to about 181⁄4 inches; the Roman cubit to very nearly 171⁄2 inches.Cubital, R. A bolster or cushion used by the Romans to rest the elbow on when reclining.Cubit-arm, Her. A human arm couped at the elbow. ”
