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.
Recent Examples on the Web It's expected to be a busy day for trades of players and draft picks between teams. Phil Helsel, NBC News, 26 Apr. 2024 To him, the ever-changing nature of the house makes each day of exploration that much more exciting. Jordan Moreau, Variety, 25 Apr. 2024 The 22-year-old was days away from wrapping up his third NHL season and gearing up for a third consecutive trip to the playoffs with the Florida Panthers. Jordan McPherson, Miami Herald, 25 Apr. 2024 Friday is a special day for fans of a certain twisted snack. Mike Snider, USA TODAY, 25 Apr. 2024 Because my number one priority still is my recovery and strengthening and just getting better, internally and externally, every day. James Hibberd, The Hollywood Reporter, 25 Apr. 2024 According to an affidavit obtained by PEOPLE, he was taken into custody at Opa-Locka airport by Miami-Dade police working alongside Homeland Security agents, who raided Combs' two homes around the same time that day. Ilana Kaplan, Peoplemag, 25 Apr. 2024 The Justices have already come under criticism for their delay in taking up Trump's appeal, waiting until the last day of the term for oral arguments. Nik Popli, TIME, 25 Apr. 2024 Last month, Indiana's governor signed a law directing schools to limit cellphone use during the school day. The Arizona Republic, 13 Apr. 2024

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 28 Apr. 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

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