Old English

Short definition from Wiktionary

Proper noun

1. 1
   The ancestor language of Modern English, also called Anglo-Saxon, spoken in most of Britain from about 400 to 1100.
2. 2
   Archaic English (Early Modern English) or Middle English speech or writing, or an imitation of this: "old" English.
3. 3
   The form of black letter used by 16th-century English printers.
4. 4
   A historical ethnic group in Ireland descended from Norman invaders from Britain from the 12th century to the 17th century.