(noun, verb)


1. time for Earth to make a complete rotation on its axis

- two days later they left

- they put on two performances every day

- there are 30,000 passengers per day

Definition categories: time

2. some point or period in time

- it should arrive any day now

- after that day she never trusted him again

- those were the days

Definition categories: time

3. a day assigned to a particular purpose or observance

- Mother's Day

Definition categories: time

4. the time after sunrise and before sunset while it is light outside

- the dawn turned night into day

- it is easier to make the repairs in the daytime

Similar word(s): daylight, daytime

Definition categories: time, period

5. the recurring hours when you are not sleeping (especially those when you are working)

- my day began early this morning

- it was a busy day on the stock exchange

- she called it a day and went to bed

Definition categories: time

6. an era of existence or influence

- in the day of the dinosaurs

- in the days of the Roman Empire

- in the days of sailing ships

Definition categories: time, epoch, era

7. the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis

- how long is a day on Jupiter?

Definition categories: time, period

8. the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day

Definition categories: time

9. a period of opportunity

- he deserves his day in court

- every dog has his day

Definition categories: state, chance, opportunity

Sentences with day as a noun:

- I've been here for two days and a bit.

- The day begins at midnight.

- A day on Mars is slightly over 24 hours.

- I worked two days last week.

- day and night;  I work at night and sleep during the day.

- Every dog has its day.

- The day belonged to the Allies.


1. (rare) To spend a day (in a place).