number one
noun
oneself, especially one's own well-being or interests: to look out for number one.
a person, company, etc., that is first in rank, order, or prestige: Our team is number one.
urination: used especially by or with reference to children.
adjective
of the highest in quality, status, importance, etc.; first-rate: a number one performance.
first in rank, order, or prestige: the number one book on the bestseller list.
Idioms for number one
make/do/go number one, Informal.
to urinate: used especially by or with reference to children.
Origin of number one
First recorded in 1830–40
Words nearby number one
Example sentences from the Web for number one
British Dictionary definitions for number one
number one
noun
adjective
first in importance, urgency, quality, etc
number one priority
informal
(of a pop record) having reached the top of the charts