SPY n.
A person sent secretly into an enemy's camp, territory, or fortifications, to inspect his works, ascertain his strength, movements, or designs, and to communicate such intelligence to the proper officer. Spy money, money paid to a spy; the reward for private or secret intelligence regarding the enemy. -- Spy Wednesday…
WALL n.
A defense; a rampart; a means of protection; in the plural, fortifications, in general; works for defense. The waters were a wall unto them on their right hand, and on their left. Ex. xiv. 22. In such a night, Troilus, methinks, mounted the Troyan walls. Shak. To rush undaunted to defend the walls. Dryden.…
WORK n.
tures in civil, military, or naval engineering, as docks, bridges, embankments, trenches, fortifications, and the like; also, the structures and grounds of a manufacturing establishment; as, iron works; locomotive works; gas works. (d) pl.