The definition of a ruse is a trick.(noun)
An example of a ruse is when you lie to someone to get them out of the house before a surprise party.
See ruse in Webster's New World College Dictionary
Origin: Fr < MFr < OFr reuser, to deceive < L recusare, to be reluctant, refuse: see recusant
See ruse in American Heritage Dictionary 4
Origin: Middle English, detour, dodging
Origin: , from Old French
Origin: , from ruser, to drive back; see rush1.
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