Diary \Di"a*ry\, n.; pl. Diaries. [L. diarium, fr. dies day. See Deity.]

A register of daily events or transactions; a daily record; a journal; a blank book dated for the record of daily memoranda; as, a diary of the weather; a physician's diary.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Diary \Di"a*ry\, a. lasting for one day; as, a diary fever. [Obs.]

``Diary ague.'' --Bacon.

Source: Webster's Revised Unabridged Dictionary (1913)