| Noun | 1. | flank - the side of military or naval formation; "they attacked the enemy's right flank"formation - an arrangement of people or things acting as a unit; "a defensive formation"; "a formation of planes" | |
| 2. | flank - a subfigure consisting of a side of somethingsubfigure - a figure that is a part of another figure hypotenuse - the side of a right triangle opposite the right angle base - the bottom side of a geometric figure from which the altitude can be constructed; "the base of the triangle" | |
| 3. | flank - a cut from the fleshy part of an animal's side between the ribs and the legflank steak - a cut of beef from the flank of the animal | |
| 4. | flank - the side between ribs and hipbonequadruped - an animal especially a mammal having four limbs specialized for walking body part - any part of an organism such as an organ or extremity | |
| Verb | 1. | flank - be located at the sides of something or somebodylie - be located or situated somewhere; occupy a certain position | |