a day regarded as the number of hours work one person can complete in a day
man-day in American English
(ˈmænˌdei)
nounWord forms: pluralman-days
a unit of measurement, esp. in accountancy; based on a standard number of man-hours in a day of work
Word origin
[1920–25]This word is first recorded in the period 1920–25. Other words that entered Englishat around the same time include: Unknown Soldier, audio, follow-up, montage, slalom