Dilatation of the veins associated with the spermatic cord in the testes WordNet 3.0 & Open English WordNet

A varicocele is, in a male person, an abnormal enlargement of the pampiniform venous plexus in the scrotum; in a female person, it is an abnormal painful swelling to the embryologically identical pampiniform venous plexus; it is more commonly called pelvic compression syndrome. Wikipedia

Abnormal enlargement of the pampiniform venous plexus in the scrotum Wikidata

Varicose veins in the area of the scrotum. Wiktionary