I.a digging (rare but class.): “recenti fossione terram fumare calentem,” Cic. N. D. 2, 9, 25; Col. 11, 2, 41; Plin. 17, 26, 39, § 247.—In plur.: “quid fossiones agri repastinationesque proferam?” Cic. de Sen. 15, 53.—
II. Transf., a ditch, Vitr. 8, 1, 5.