A great time or a great deal to do, at somebody else's expense.
A great time or a great deal to do; a period of bustling activity.
A day of class taken away from school for a field trip.
A day on which there is top-to-bottom all-hands cleaning.
A school day for athletic events; a sports day.
A day for manoeuvres and tactical exercises in "the field".
The section of a newspaper containing comic strips.