|Origin:||nombre, from Latin numerus|
number1 S1 W1
a word or sign that represents an amount or a quantity [↪ numeral, figure]:
They wrote various numbers on a large sheet of paper.
Five was her lucky number.
an even number (=2, 4, 6, 8, 10 etc)
an odd number (=1, 3, 5, 7, 9 etc)
round number (=a number ending in 0)
A million pounds seemed a suitably round number.
be good/bad/no good with numbers informal (=to be good, bad etc at calculating things using numbers)➔ cardinal number, ordinal number, prime number, whole number
a phone number:
My new number is 502-6155.
somebody's home/office/work number
I gave him my home number.
What's your mobile number?
Sorry, you have the wrong number.
the form of a word, depending on whether one thing or more than one thing is being talked about:
'Horses' is plural in number, while 'horse' is singular.