Definition of business suit in English:
A plain matching jacket and trousers (or skirt), as worn by office workers.
- I got up happily to see Raine watering her flowers again, in a business suit, black skirt and white shirt covered with a black blazer.
- I changed into the business suit of a navy blazer and blue skirt and looked in the mirror.
- After rising through the flying ranks to captain, he switched his epaulettes for a business suit to move into a corporate job with the airline.