the grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural)
in English the subject and the verb must agree in number
a clothing measurement
a number 13 shoe
a numeral or string of numerals that is used for identification
she refused to give them her Social Security number
a select company of people
I hope to become one of their number before I die
one of a series published periodically
she found an old issue of the magazine in her dentist's waiting room
a symbol used to represent a number
he learned to write the numerals before he went to school
the number is used in calling a particular telephone
he has an unlisted number
a short theatrical performance that is part of a longer program
he did his act three times every evening
she had a catchy little routine
it was one of the best numbers he ever did
a concept of quantity involving zero and units
every number has a unique position in the sequence
the property possessed by a sum or total or indefinite quantity of units or individuals
he had a number of chores to do
the number of parameters is small
the figure was about a thousand
Verb
place a limit on the number of
determine the number or amount of
Can you count the books on your shelf?
Count your change
put into a group
The academy counts several Nobel Prize winners among its members
enumerate
We must number the names of the great mathematicians
