Definition of perineum noun from the Oxford Advanced Learner's Dictionary

 

perineum

 noun
noun
BrE BrE//ˌperɪˈniːəm//
 
; NAmE NAmE//ˌperɪˈniːəm//
 
(pl. perinea
BrE BrE//ˌperɪˈniːə//
 
; NAmE NAmE//ˌperɪˈniːə//
 
)
(anatomy)
 
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the area between the anus and the scrotum or vulva Word Origin late Middle English: from late Latin, from Greek perinaion.
See the Oxford Advanced American Dictionary entry: perineum