NOUN (1)

1. dilatation of the veins associated with the spermatic cord in the testes;

The Collaborative International Dictionary of English v.0.48:

Varicocele \Var"i*co*cele\, n. [Varix a dilated vein + Gr. ?
   tumor: cf. F. varicoc[`e]le.] (Med.)
   A varicose enlargement of the veins of the spermatic cord;
   also, a like enlargement of the veins of the scrotum.
   [1913 Webster]