Meaning of number in English
1. a symbol or word used in counting and making calculations
an odd number
2. a numeral or set of numerals that is used to identify someone or something
What's your seat number?
3. a quantity of people or things
The number of students in this class is thirty.
Please tell me your phone number.
We number 15 in total[all].
2. give a number to something in a series, usually starting at 1
He numbered all the books he had.