Flank (flăṉk), v. t. [imp. & p. p.Flanked (flăṉkt); p. pr. & vb. n.Flanking.] [Cf. F. flanquer. See Flank, n., and cf. Flanker, v. t.] 1. To stand at the flank or side of; to border upon.
Stately colonnades are flanked with trees. Pitt.
2. To overlook or command the flank of; to secure or guard the flank of; to pass around or turn the flank of; to attack, or threaten to attack; the flank of.