Lewis Short
scapus (noun M) : root skap-; Gr. σκήπτω, to prop, σκῆπτρον; Doric, σκᾶπος; cf.: scipio, scamnum, scopus; Engl. shaft
* A shaft, stem, stalk, trunk, etc.
* In gen., Varr. R. R. 1, 31, 5; Col. 9, 4, 4; Plin. 18, 10, 21, § 95; Sen. Ep. 86, 17.
* In partic.
* A cylinder on which sheets of paper or leaves of papyrus were rolled, Plin. 13, 12, 23, § 77.
* The post or newel of a circular staircase, Vitr. 9, 2 fin.
* The main stile of a door on which it hinged, Vitr. 4, 6.
* The beam of a balance, Vitr. 10, 8; Fest. s. v. agina, p. 10 Müll.; and s. v. librile, p. 116 ib.
* = membrum virile, Aug. Civ. Dei, 7, 24 fin.; Veg. 5, 14, 17.
Charlton T. Lewis, Charles Short, A Latin Dictionary