1. adjective /med.i.ˈi.vəl,mi.di.ˈi.vəl,mɪd.ˈi.vəl,mɪd.ˈi.vəl/
a) of or relating to the Middle Ages, perhaps circa 500 to circa 1500 .
b) having characteristics associated with the Middle Ages.
2. noun /med.i.ˈi.vəl,mi.di.ˈi.vəl,mɪd.ˈi.vəl,mɪd.ˈi.vəl/
a) Someone living in the Middle Ages.
b) A medieval one.
Wikipedia foundation.