noun
[ U ] ( medical ) a tropical skin disease caused by a parasite of certain flies that breed in rivers, which can also cause a person to become blind
noun
[ U ] ( medical ) a tropical skin disease caused by a parasite of certain flies that breed in rivers, which can also cause a person to become blind
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005