mediaeval
adjective /ˌmediˈiːvl/
  /ˌmediˈiːvl/,  /ˌmiːdˈiːvl/
 (also medieval)
 [usually before noun]- connected with the Middle Ages (about AD 1000 to AD 1450)
- mediaeval architecture/castles/manuscripts
 - the literature of the late mediaeval period