(~s)
1.
An ~ is someone who gives another person a piece of information. (FORMAL)
N-COUNT
2.
An ~ is the same as an informer .
N-COUNT
(~s)
1.
An ~ is someone who gives another person a piece of information. (FORMAL)
N-COUNT
2.
An ~ is the same as an informer .
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012