DEAD LETTER


Meaning of DEAD LETTER in English

noun

1.

[ usually sing. ] a law or an agreement that still exists but that is ignored

2.

( especially NAmE ) a letter that cannot be delivered to an address or to the person who sent it

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