HOW LONG IS A PIECE OF STRING?


Meaning of HOW LONG IS A PIECE OF STRING? in English

( BrE , informal ) used to say that there is no definite answer to a question :

'How long will it take?' 'How long's a piece of string?'

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.