adjective Date: 1933 characterized by or requiring the wearing of semiformal evening clothes consisting of a usually black tie and tuxedo for men and a formal dress for women
BLACK-TIE
Meaning of BLACK-TIE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012