number

An abstract entity used to describe quantity.

“Zero, one, −1, 2.5, and pi are all numbers.”

A numeral: a symbol for a non-negative integer.

“The number 8 is usually made with a single stroke.”

An element of one of several sets: natural numbers, integers, rational numbers, real numbers, complex numbers, and sometimes extensions such as hypercomplex numbers, etc.

“The equation e^{i\pi}+1=0 includes the most important numbers: 1, 0, \pi, i, and e.”

(Followed by a numeral; used attributively) 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.

“Horse number 5 won the race.”

Quantity.

“Any number of people can be reading from a given repository at a time.”

A sequence of digits and letters used to register people, automobiles, and various other items.

“Her passport number is C01X864TN.”

A telephone number.

(grammar) Of a word or phrase, the state of being singular, dual or plural, shown by inflection.

“Adjectives and nouns should agree in gender, number, and case.”

(in the plural) Poetic metres; verses, rhymes.

A performance; especially, a single song or song and dance routine within a larger show.

“For his second number, he sang "The Moon Shines Bright".”

A person.

An item of clothing, particularly a stylish one.

A marijuana cigarette, or joint; also, a quantity of marijuana bought form a dealer.

An issue of a periodical publication.

“the latest number of a magazine”

A large amount, in contrast to a smaller amount; numerical preponderance.

To label (items) with numbers; to assign numbers to (items).

“Number the baskets so that we can find them easily.”

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.”

Physically unable to feel, not having the power of sensation.

“fingers numb with cold”

Emotionally unable to feel or respond in a normal way.

“numb with shock; numb with boredom”

Causing numbness.