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Related to external orifice: External urethral orifice
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|Noun||1.||external orifice - the orifice through which urine is discharged|
orifice, porta, opening - an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
urethra - duct through which urine is discharged in most mammals and which serves as the male genital duct