A Single event which happens once and whose  identity is limited to that one happening or a Single object or thing which is in some single place at any one instant of time, such event or thing being significant only as occurring just when and where it does, such as this or that word on a single line of a single page of a single copy of a book, I will venture to call a Token.

(Peirce 1906, 506)

Contributed by Caroline. View changelog.