Wiktionary
work day
n. (alternative form of workday English)
WordNet
work day
n. a day on which work is done [syn: workday, working day] [ant: rest day]
Usage examples of "work day".
He was convinced the production rate of high-tech aviation parts would take a downward plunge if he missed a single work day.
It was take-your-child-to-work day, and she'd never seen the lab before.
He looked down the thirty story height upon the bustling city below, the work day was coming to a end for the little people of New Boston.
They were all moving in the opposite direction, since the work day had ended for them.
Eventually I went to bed myself, with instructions to be awakened at the beginning of the work day.