What does "evening dress" mean?

An elegant dress worn by women, especially for social events in the evening, an evening gown.

Evening dress

Common synonyms include: evening clothes, evening gown, eveningwear, formal, formal attire, formals.

noun

noun ·Rare ·Advanced level

Noun

1
An elegant dress worn by women, especially for social events in the evening, an evening gown. countable
2
attire to wear on formal occasions in the evening wordnet
3
Formal attire worn for evening social events. uncountable
"I felt uncomfortably conspicuous, since I was the only man in evening dress."

"I felt uncomfortably conspicuous, since I was the only man in evening dress."