To this officer a sack-suit or business-suit is a lounge-suit.
The lounge-suit that he was wearing might serve, but his luggage was totally impossible.
"I presume you'll dine up here, sir," said Joseph, glancing at the lounge-suit.
Yet I stood aghast, for with the lounge-suit of tweeds I had selected the day before he had worn his top-hat!
On one occasion, too, he appeared in the trousers of a lounge-suit of tweeds instead of his dress trousers, and with tan boots.