Day

/deɪ/

Meaning & Definition

noun
A period of 24 hours as a unit of time, reckoned from one midnight to the next.
We will meet for lunch in the middle of the day.
The time between sunrise and sunset when there is daylight.
During the day, the park is filled with families having picnics.
A specified day of the month or year.
Her birthday is the best day of the year for me.
A period of time in one's life.
He had the best days of his youth traveling the world.
A time for activity or work, as opposed to night.
She prefers to do her studies during the day when she feels more alert.

Etymology

Old English 'dæg', related to Dutch 'dag' and German 'Tag'.

Common Phrases and Expressions

day in and day out
Repeatedly or continuously over a long period.
call it a day
To stop working for the day.
one of these days
At some unspecified time in the future.
daydream
A series of pleasant thoughts that distract one's attention from the present.
good day
A polite expression used to bid farewell or greet someone.

Related Words

daylight
The natural light of the day.
week
A period of seven days.
calendar
A system for organizing days into weeks and months.

Slang Meanings

Hump Day
Wednesday is often called Hump Day because it’s the middle of the week.
Day trip
We're going on a day trip to the beach this Saturday.
Throw shade
She was just throwing shade at him all day during the meeting.