urethral : Idioms & Phrases
Urethral fever
(Med.) , fever occurring as a consequence of operations upon the urethra.
Webster 1913
urethral orifice
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noun the orifice through which urine is discharged
external orifice.
WordNet
urethral sphincter
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noun a striated sphincter muscle that constricts the urethra
musculus sphincter urethrae.