Meaning of FLYING in English

[adjective] [before noun; not gradable] [esp. UK]A flying picket is a worker who travels to support workers who are on strike at another place of work.A flying squad is a small group of police officers which is trained to act quickly, esp. when there is a serious crime.In a race, a flying start is when one competitor starts more quickly than the others.(figurative) She's (got) off to a flying start (= has begun very well) in her new job.A flying visit is a very short visit, usually to a person.I'm afraid this will have to be a flying visit as we've only got an hour before the train leaves.

Cambridge English vocab.      Кембриджский английский словарь.