FLOATER
Meaning of FLOATER in English
/ ˈfləʊtə(r); NAmE ˈfloʊt-/ noun
( medical ) a very small object inside a person's eye which they see moving up and down
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005