YESTERDAY

I. adverb Etymology: Middle English yisterday, from Old English giestran dæg, from giestran ~ + dæg day; akin to Old High German gestaron ~, Latin heri, Greek chthes Date: before 12th century on the day last past ; on the day preceding today, at a time not long past ; only a short time ago , ~ adjective II. noun Date: before 12th century the day last past ; the day next before the present, recent time ; time not long past, past time