Definitions
1.VerbTo attack the flank(s) of.
2.VerbTo defend the flank(s) of.
3.VerbTo place to the side(s) of.
4.VerbTo be placed to the side(s) of something (usually in terms of two objects, one on each side).
5.NounThe lateral flesh between the last rib and the hip.
6.NounA cut of meat from the flank of an animal.
7.NounThe extreme left or right edge of a military formation, army etc.
8.NounThe sides of a bastion perpendicular to the wall from which the bastion projects.
9.NounThe side of something, in general senses.
10.NounEither of the two pockets located on the seat of a pair of pants."I took the quarter and hid it in my right flank."
11.NounAn ideological faction within a political party."Ford survived a primary challenge in 1976 from the right flank of the Republican Party by Ronald Reagan."
12.NounThe outermost strip of a road.
13.NounThe wing, one side of the pitch.
14.NounThat part of the acting surface of a gear wheel tooth that lies within the pitch line.
15.AdjectiveMaximum. Historically faster than full speed (the most a vessel can sustain without excessive engine wear or risk of damage), now frequently used interchangeably. Typically used in an emergency or during an attack."All ahead flank!"