Dictionary

flehmen

noun fleh·men \ˈflā-mən\

Definition of FLEHMEN

:  a mammalian behavior (as of horses or cats) in which the animal inhales with the mouth open and upper lip curled to facilitate exposure of the vomeronasal organ to a scent or pheromone
flehmen intransitive verb
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Origin of FLEHMEN

German, from flehmen (of animals) to curl the upper lip
First Known Use: 1976

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