/ˌmɛdɪˈiːvəl/
Something that is medieval relates to or was made in the period of European history between the end of the Roman Empire in AD 476 and about AD 1500. 中世纪的
例：
…a medieval castle.
…一座中世纪的城堡。
informal
very old-fashioned 非常老派的；极其过时的
His ideas about women are positively medieval!
他对妇女的看法极其过时！