number one Meaning, definition in Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "number one" - English Dictionary

See all translations

number onenoun [U]

uk   us  

number one noun [U] (YOURSELF)

(US also numero uno) informal yourself and no one else: Frank is completely selfish - he only cares about number one. I'm going to look out for number one (= take care of myself only).

number one noun [U] (THE BEST)

the most important, best, most noticeable, or most famous person or organization in a particular area of activity: She's still the world number one in tennis. I'm your number one fan.
Translations of “number one”
in Chinese (Traditional) 自己…
in Chinese (Simplified) 自己…
(Definition of number one from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of number one?
Add Cambridge dictionaries to your browser to your website

Definitions of “number one” in other dictionaries

Word of the Day
athlete

a person who is very good at sports or physical exercise, especially one who competes in organized events

Word of the Day

When’s dinner? (Words for different meals)
When’s dinner? (Words for different meals)
by Kate Woodford,
July 22, 2015
Here at ‘About Words’ we’re always happy to get ideas for posts that we could write. A reader of this blog recently asked for a post on the language of meals and we thought this an excellent idea. If you are reading this post and have an idea for a topic or

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More