noun, plural di·a·ries.
- a daily record, usually private, especially of the writer’s own experiences, observations, feelings, attitudes, etc.
- a book for keeping such a record.
- a book or pad containing pages marked and arranged in calendar order, in which to note appointments and the like.
noun plural -ries
- a personal record of daily events, appointments, observations, etc
- a book for keeping such a record
1580s, from Latin diarium “daily allowance,” later “a journal,” neuter of diarius “daily,” from dies “day” (see diurnal); also see -ary. Earliest sense was a daily record of events; sense of the book in which such are written is said to be first attested in Ben Jonson’s “Volpone” (1605).