Noah Webster's New International Dictionary of the English Language
1. (n.) 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.
2. (n.) A collection of many individuals; a numerous assemblage; a multitude; many.
3. (n.) A numeral; a word or character denoting a number; as, to put a number on a door.
4. (n.) Numerousness; multitude.
5. (n.) The state or quality of being numerable or countable.
6. (n.) Quantity, regarded as made up of an aggregate of separate things.
7. (n.) That which is regulated by count; poetic measure, as divisions of time or number of syllables; hence, poetry, verse; -- chiefly used in the plural.
8. (n.) The distinction of objects, as one, or more than one (in some languages, as one, or two, or more than two), expressed (usually) by a difference in the form of a word; thus, the singular number and the plural number are the names of the forms of a word indicating the objects denoted or referred to by the word as one, or as more than one.
9. (n.) The measure of the relation between quantities or things of the same kind; that abstract species of quantity which is capable of being expressed by figures; numerical value.
10. (n.) To count; to reckon; to ascertain the units of; to enumerate.
11. (n.) To reckon as one of a collection or multitude.
12. (n.) To give or apply a number or numbers to; to assign the place of in a series by order of number; to designate the place of by a number or numeral; as, to number the houses in a street, or the apartments in a building.
13. (n.) To amount; to equal in number; to contain; to consist of; as, the army numbers fifty thousand.