FLANKERING
Verb
flankering
present participle of flanker
Source: Wiktionary
FLANKER
Flank"er, n.
Definition: 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.
Flank"er, v. t. [imp. & p. p. Flankered; p. pr. & vb. n. Flankering.]
Etym: [See Flank, v. t.]
1. To defend by lateral fortifications. [Obs.] Sir T. Herbert.
2. To attack sideways. [Obs.] Evelyn.
Source: Webster’s Unabridged Dictionary 1913 Edition