NUMBER

Number

A number is a mathematical object used to count, label, and measure. In mathematics, the definition of number has been extended over the years to include such numbers as, negative numbers, rational numbers, irrational numbers, and complex numbers.

The above text is a snippet from Wikipedia: Number

number

Noun

1. An abstract entity used to describe quantity.
2. A numeral: a symbol for a non-negative integer
3. A member of one of several classes: natural numbers,integers, rational numbers, real numbers, complex numbers, quaternions.
{{usex|The equation $e^{i\pi}+1=0$ includes the most important numbers: 1, 0, $\pi$, $i$, and $e$.|lang=en}}
4. Indicating the position of something in a list or sequence. Abbreviations: No or No., no or no. (in each case, sometimes written with a superscript "o", like Nº or №). The symbol "#" is also used in this manner.
5. Quantity.
6. Of a word or phrase, the state of being singular, dual or plural, shown by inflection.
7. Poetic metres; verses, rhymes.
8. A performance; especially, a single song or song and dance routine within a larger show.
9. A person
10. An item of clothing, particularly a stylish one
11. A telephone number
12. A sequence of digits and letters used to register people, automobiles, and various other items.
13. A marijuana cigarette, or joint; also, a quantity of marijuana bought form a dealer.

Verb

1. To label (items) with numbers; to assign numbers to (items).
Number the baskets so that we can find them easily.
2. To total or count; to amount to.
I don’t know how many books are in the library, but they must number in the thousands.