Source : Webster's Revised Unabridged Dictionary (1913)

Urocele \U"ro*cele\, n. [1st uro + Gr. ? tumor.] (Med.)
   A morbid swelling of the scrotum due to extravasation of
   urine into it.

Source : WordNet®

urocele
     n : extravasation of urine into the scrotal sac