What is Flank?

Flank definition and meaning on Dictionary terms:

the side of an animal or a person between the ribs and hip.
the thin piece of flesh constituting this part.
a slice of meat from the flank of an animal.
the side of anything, as of a building.
Military, Navy. the extreme right or left side of an army or fleet, or a subdivision of an army or fleet.

  1. the right or left side of a work or fortification.
  2. the part of a bastion that extends from the curtain to the face and protects the curtain and the opposite face.
Machinery. (on a screw thread or the like) either of the two vertical inclined surfaces between the crest and the root.