TELLTALE


Meaning of TELLTALE in English

■ adjective revealing or betraying something.

■ noun

1》 Brit. a person who reports others' wrongdoings or reveals their secrets.

2》 a device or object that automatically gives a visual indication of the state or presence of something.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.