philtra

/ˈfɪltrə/
noun
  1. The plural of philtrum; the vertical grooves on the upper lip of humans and many mammals, located between the nose and the upper lip.
    • In some cultures, people consider prominent philtra a sign of beauty.
    • The cat's philtra are especially prominent when it yawns.
    • The doctor examined the infant's philtra for signs of a cleft palate.
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