I / incussus
noun

incussus

gen. incussūs · gender masculine · decl. 4th
a striking; dashing against; a shock
a striking or dashing against, a shock (rare, and only in abl. sing.): armorum, Tac. H. 4, 23: arietis, Sen. Const. Sap. 6: silicis, Prud. Cathem. 5, 7.