Third-person singular simple present indicative form of flank.(verb)
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Use "flanks" in a sentence
"On his flanks were the Secretary of Attack, the Secretary of Mistakes, and a few of the mouthpieces for this coup de 'tat."
"On the flanks were the grenadier companies, spread in parties of twenty men, each under a sergeant."
"To keep look-out by sentries, to watch for any lifting in the barrage, and to maintain communication with H.Q. and with the flanks were the measures required."