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
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. 2005