| day | |
| 1. n. Any period of 24 hours. | |
| I've been here for two days and a bit. | |
| 2. n. A period from midnight to the following midnight. | |
| The day begins at midnight. | |
| 3. n. (astronomy) Rotational period of a planet (especially Earth). | |
| A day on Mars is slightly over 24 hours. | |
| 4. n. The part of a day period which one spends at one’s job, school, etc. | |
| I worked two days last week. | |
| 5. n. Part of a day period between sunrise and sunset where one enjoys daylight; daytime. | |
| day and night; I work at night and sleep during the day. | |
| 6. n. A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time. | |
| Every dog has its day. | |
| 7. n. A period of contention of a day or less. | |
| The day belonged to the Allies. | |
| 8. n. (meteorology) A 24-hour period beginning at 6am or sunrise. | |
| Your 8am forecast: The high for the day will be 30 and the low, before dawn, will be 10. | |
| 9. v. (rare, intransitive) To spend a day (in a place). | |
