One

1. Being a single unit, or entire being or thing, and no more; not multifold; single; individual.
2. A symbol representing a unit, as 1, or i.
3. Any person, indefinitely; a person or body; as, what one would have well done, one should do one's self.
4. Single in kind; the same; a common.
5. Denoting a person or thing conceived or spoken of indefinitely; a certain. "I am the sister of one Claudio" [Shak.], that is, of a certain man named Claudio.
6. A single person or thing.
7. Closely bound together; undivided; united; constituting a whole.
8. A single unit; as, one is the base of all numbers.
9. Pointing out a contrast, or denoting a particular thing or person different from some other specified; -- used as a correlative adjective, with or without the.
10. Single; inmarried.
11. To cause to become one; to gather into a single whole; to unite; to assimilite.