CHEVAL-DE-FRISE n.
A piece of timber or an iron barrel traversed with iron-pointed spikes or spears, five or six feet long, used to defend a passage, stop a breach, or impede the advance of cavalry, etc. Obstructions of chain, boom, and cheval-de-frise. W. Irving.
DAMASCUS n.
s or wires of iron and steel elaborately twisted and welded together; used for making gun barrels, etc., of high quality, in which the surface, when polished and acted upon by acid, has a damasc appearance. -- Damascus steel. See Damask steel, under Damask, a.