Definition of perineum noun from the Oxford Advanced American Dictionary

 

perineum

 noun
noun
NAmE//ˌpɛrəˈniəm//
 
(pl. perinea
NAmE//ˌpɛrəˈniə//
 
)
(anatomy)
 
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the area between the anus and the scrotum or vulva
See the Oxford Advanced Learner's Dictionary entry: perineum