Example: She refused to give them her Social Security number.
source: wordnet30
a clothing measurement(noun.attribute)
Example: A number 13 shoe.
source: wordnet30
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)(noun.communication)
Example: In English the subject and the verb must agree in number.
source: wordnet30
an item of merchandise offered for sale(noun.artifact)
Example: She preferred the black nylon number.
This sweater is an all-wool number.
source: wordnet30
That which admits of being counted or reckoned; a unit, or an aggregate of units; a numerable aggregate or collection of individuals; an assemblage made up of distinct things expressible by figures.(noun)