Definition of "flank" []

• The section of flesh on the body of a person or an animal between the last rib and the hip; the side. (noun)
• A cut of meat from the flank of an animal. (noun)
• A lateral part or side: the flank of a mountain. (noun)
• The right or left side of a military formation: an attack on both flanks. (noun)
• The right or left side of a bastion. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "He had another encounter with the wild-dog, who treacherously attacked him in flank from ambuscade."
• "Struck in flank by two full-grown fox - terriers, he was slashed and rolled on the deck."
• "Admiral Walticles stares in mounting concern as the left flank is pounced on by Admiral Deweycles 'fresh Liburnian Squadron."