Definition of flanks:
(n) :
The side of something, in general senses.
(v) :
(transitive) To place to the side(s) of.
(n) :
(anatomy) The lateral flesh between the last rib and the hip.
(n) :
(cooking) A cut of meat from the flank of an animal.
(v) :
(transitive) To attack the flank(s) of.
(v) :
(transitive) To defend the flank(s) of.