[1] : The Collaborative International Dictionary of English v.0.48

workday \work"day`\, n.  a. as. weorcdaeg.
   a day on which work is performed, as distinguished from
   sunday, festivals, etc., a working day.
   1913 webster

[2] : WordNet (r) 2.0

workday
     n 1: a day on which work is done syn: working day, work day
          ant: rest day
     2: the amount of time that a worker must work for an agreed
        daily wage; "they work an 8-hour day" syn: working day
see also:
working day work day rest day 

Workday >> W Words
Workday, definition of term: Workday
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