urethra (n.)youdaoicibaDictYouDict[urethra 词源字典]
"canal through which urine is discharged from the bladder," 1630s, from Late Latin urethra, from Greek ourethra "the passage for urine," coined by Hippocrates from ourein "to urinate," from ouron (see urine). Related: Urethral.[urethra etymology, urethra origin, 英语词源]