dress shirt
noun
1- a man's white shirt worn with a bow tie and a dinner jacket on formal occasions（男子穿无燕尾夜礼服时系领结的白色）礼服衬衫。
1.1
- N. Amer. a man's long-sleeved shirt, suitable for wearing with a tie〈北美〉（适于系领带的）男式长袖衬衫。