Flanker

Part of speech: noun (n.)

One who, or that which, flanks, as a skirmisher or a body of troops sent out upon the flanks of an army toguard a line of march, or a fort projecting so as to command the side of an assailing body. They threw out flankers, and endeavored to dislodge their assailants. W. Irwing.

Part of speech: verb (v.)

1. To defend by lateral fortifications. [Obs.] Sir T. Herbert.

2. To attack sideways. [Obs.] Evelyn.