Definition of "one"
A numerical value equal to 1; the first number in the set of natural numbers (especially in number theory); the cardinality of the smallest nonempty set. Ordinal: first.
The ordinality of an element which has no predecessor, usually called first or number one.
The neutral element with respect to multiplication in a ring.
The digit or figure 1.
A one-dollar bill.
One run scored by hitting the ball and running between the wickets; a single.
Used instead of ! to amplify an exclamation, imitating n00bs who forget to press the shift key while typing exclamation points.
A particularly special or compatible person or thing.
One thing (among a group of others); one member of a group.
The first mentioned of two things or people, as opposed to the other.
Any person (applying to people in general).
Any person, entity or thing.
Of a period of time, being particular; as, one morning, one year.
Being a single, unspecified thing; a; any.
Being a preeminent example.
Being an unknown person with the specified name.
To cause to become one; to gather into a single whole; to unite.