flank

Concise Oxford English Dictionary © 2008 Oxford University Press:
flank/flaŋk/

▶noun

• 1 the side of a person's or animal's body between the ribs and the hip.

• 2 the side of a large object or structure.

• 3 the left or right side of a body of people.

  ■ the right or left side of a chessboard or similar gaming area.

• 4 (also flank forward) Rugby another term for wing (sense 8 of the noun).

▶verb be situated on each or on one side of.

– phrases
in flank Military at the side.

– origin OE, from OFr. flanc, of Gmc origin.