urethra

n. canal in mammals through which urine is discharged from the bladder and in males through which semen is emitted

In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. The urethra has an excretory function in both genders to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm. The external urethral sphincter is a striated muscle that allows voluntary control over urination.
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Urethra /ure·thra/ the membranous canal through which urine is discharged from the bladder to the exterior of the body. [more]Urethra - Community and Resources

Noun
1. duct through which urine is discharged in most mammals and which serves as the male genital duct
(hypernym) duct, epithelial duct, canal, channel
(part-holonym) urinary tract
(part-meronym) urethral orifice, external orifice

n. urethra, canal through which urine is discharged from the bladder (in males: also the duct for semen)