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 pluralthe 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:
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
Dillon Gabriel moved to a backup role as Deshaun Watson remained on the physically unable to perform list, even after the team opened his 21-day practice window in December.
—
Chantz Martin, FOXNews.com, 2 May 2026
The 76ers have come up with back-to-back resounding victories to force a Game 7 that did not look feasible a few days ago.
—Dan Santaromita, New York Times, 2 May 2026
Track all of the day’s news and analysis here.
—Yun Li,alex Harring,sarah Min, CNBC, 2 May 2026
Under the War Power Act, a president must receive congressional approval by day 60 of a war or begin removing troops.
—Michael Loria, USA Today, 2 May 2026
See All Example Sentences for day
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Chantz Martin, FOXNews.com, 2 May 2026
The 76ers have come up with back-to-back resounding victories to force a Game 7 that did not look feasible a few days ago.
—Dan Santaromita, New York Times, 2 May 2026
Track all of the day’s news and analysis here.
—Yun Li,alex Harring,sarah Min, CNBC, 2 May 2026
Under the War Power Act, a president must receive congressional approval by day 60 of a war or begin removing troops.
—Michael Loria, USA Today, 2 May 2026
See All Example Sentences for day
Cite this Entry
“Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/day. Accessed 3 May. 2026.
Copy CitationKids Definition
day
noun1
a
: the time of light between one night and the next
b
: daylight
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
2 of 3biographical name (2)
Thomas 1748–1789 English author
Day
3 of 3biographical name (3)
William Rufus 1849–1923 American statesman and jurist
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