noun Date: 1933 a question (as isn't it in “it's fine, isn't it?”) added to a statement or command (as to gain the assent of or challenge the person addressed)
TAG QUESTION
Meaning of TAG QUESTION in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012