number one
2 ENTRIES FOUND:
1
number one
noun
or
No. 1
1
number one
noun
or
No. 1
Britannica Dictionary definition of NUMBER ONE
[noncount]
1
a
:
a person, thing, or position that is highest in rank
:
the most important person or thing in a group of people or things
-
Who's number one in this office?
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Getting the car fixed is number one on my list of priorities.
-
I'll tell you why we can't go on a vacation: number one, we can't afford it, and number two, we'll miss my sister's party.
-
Two of their songs have gone to number one [=the highest rank] on the pop charts.
b
:
the most successful person or thing in a group of people or things
-
Her movie is currently number one at the box office.
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When the goal was scored, the fans started to chant, “We're number one, we're number one.”
2
:
your own happiness, health, or success
:
yourself
-
I've been taking care of other people for too long. It's time for me to take care of number one.
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If you don't look out for number one [=if you don't take care of yourself], who will?
3
informal
:
liquid waste from the body
:
urine
— used mainly by children or when speaking to children
—
compare number two
2
number one
adjective
or
No. 1
2
number one
adjective
or
No. 1
Britannica Dictionary definition of NUMBER ONE
:
highest in rank or importance
-
Heart disease is the country's number one [=leading] killer of women.
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My number one [=main] concern is getting my car fixed.
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The book is the company's number one seller.
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Rule number one is don't get caught!
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He's public enemy number one: the nation's most wanted criminal.
