Definitions
1.nounAny period of 24 hours."I've been here for two days and a bit."
2.nounA period from midnight to the following midnight."The day begins at midnight."
3.nounRotational period of a planet (especially Earth)."A day on Mars is slightly over 24 hours."
4.nounThe part of a day period which one spends at one’s job, school, etc."I worked two days last week."
5.nounPart 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.nounA 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.nounA period of contention of a day or less."The day belonged to the Allies."
8.nounA 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.verbTo spend a day (in a place).
10.nounA particular time or period of vague extent."Things were more relaxed in Grandpa's days."
11.nounLife."That's how he ended his days."