plural of slow news day

A typical bad day.

plural of red-letter day

You learn something new every day.

(education) A day on which an institution (such as a farm or a university) hosts visitors who come to learn about it.

(aviation, military) An aviator (usually a fighter pilot) who destroys five or more enemy aircraft (the number required to become an ace) in a single day.

One of the dog days of summer: a late-summer day.

(US, slang) Thanksgiving Day; Turkey Day.

A day on which a cruise ship remains at sea all day (i.e. passengers cannot leave the ship).

Work done where the worker is hired and paid one day at a time, with no promise that more work will be available in the future.