plural days
1
a
: the time of light between one night and the next
the shortest day of the year
b
: daylight sense 1
woke up at the break of day
c
: daytime
sleeps during the day and works at night
2
astronomy : the period of rotation of a planet (such as earth) or a moon on its axis
the length of one day on Mars
3
: the mean solar day of 24 hours beginning at midnight by mean time
open seven days a week
the first day of every month
Take one pill two times a day.
4
: a specified day or date
their wedding day
the day of her birth
5
: a specified time or period : age
in grandfather's day
often used in plural
the old days
the days of sailing ships
6
: the conflict or contention of the day
played hard and won the day
7
: the time established by usage or law for work, school, or business
starts his day with a cup of coffee
after a long day at school
We have a busy day tomorrow.

see also day after day, day in and day out

Examples of day in a Sentence

We're open seven days a week, 365 days a year. Payment is due on the first day of every month. “What day of the week is the 28th?” “It's a Friday.” He spent five days in the hospital. She left on Thursday and came back four days later. That was the happiest day of my life. Parenthood gets better every day. The office is closed for the day. She works eight hours a day. It costs 10 dollars a day to park there. See More
Recent Examples on the Web Swift, 34, kicked off a new international leg of her record-breaking Eras Tour on Feb. 7, performing four back-to-back shows in Tokyo just days after becoming the first person to ever win album of the year for a fourth time at the Grammys. Rachel Desantis, Peoplemag, 13 Feb. 2024 Kyle Busch, one of the winningest NASCAR drivers and one of the sport’s straightest shooters, shared a similar sentiment in May, a few days before the 2023 Coca-Cola 600 at Charlotte Motor Speedway. Alex Zietlow, Charlotte Observer, 13 Feb. 2024 Online and phone bidding will be open on all three days for those who can't physically attend. Simon Thompson, Forbes, 13 Feb. 2024 Since New Year's, Leah has called the Education Department's helpline every day, waiting for hours to speak to someone. Danielle Douglas-Gabriel The Washington Post, arkansasonline.com, 13 Feb. 2024 Have a great day, from the Essential California team Ryan Fonseca, reporter Kevinisha Walker, multiplatform editor Stephanie Chavez, deputy metro editor PS: For the record: the Feb. 10 edition of Essential California said the 49ers haven’t won a Super Bowl in 19 years. Ryan Fonseca, Los Angeles Times, 13 Feb. 2024 Bringing Stewart back is a momentary bright spot, but there’s still another three days a week of episodes to fill. Alison Herman, Variety, 13 Feb. 2024 So plan accordingly when booking that babysitter to watch the kids or scheduling those morning meetings for the next day. Jim Harrington, The Mercury News, 13 Feb. 2024 But its theater can play a new, full-length film each day, moving much more quickly. Amanda Hoover, WIRED, 1 Feb. 2024 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'day.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English, from Old English dæg; akin to Old High German tag day

First Known Use

before the 12th century, in the meaning defined at sense 1a

Time Traveler
The first known use of day was before the 12th century

Dictionary Entries Near day

Cite this Entry

“Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/day. Accessed 25 Feb. 2024.

Kids Definition

day

noun
1
a
: the time of light between one night and the next
b
2
a
: the time the earth takes to make one turn on its axis
b
: the time required for a heavenly body to turn once on its axis
a lunar day
3
: a period of 24 hours beginning at midnight
4
: a specified day or date
the day of the picnic
their wedding day
5
: a specified time or period : age
in grandmother's day
6
: the conflict or dispute of the day
fought hard and won the day
7
: the time set apart by custom or law for work
the eight-hour day

Biographical Definition

Day 1 of 3

biographical name (1)

Clarence Shepard, Jr. 1874–1935 American author

Day

2 of 3

biographical name (2)

Thomas 1748–1789 English author

Day

3 of 3

biographical name (3)

William Rufus 1849–1923 American statesman and jurist

More from Merriam-Webster on day

Last Updated: - Updated example sentences
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