Middle English

Middle English is the name given by historical linguistics to the diverse forms of the English language spoken between the Norman invasion of 1066 and the mid-to-late 15th century, when the Chancery Standard, a form of London-based English, began to become widespread, a process aided by the introduction of the printing press into England by William Caxton in the 1470s, and slightly later by Richard Pynson. By this time the Northumbrian dialect spoken in south east Scotland was developing into the Scots language. The language of England as spoken after this time, up to 1650, is known as Early Modern English.
See more at Wikipedia.org...

Noun
1. English from about 1100 to 1450
(hypernym) English, English language
(hyponym) East Midland