medieval – relating to the middle ages
(Pronounced med-dee-ee-vuhl)
Note: Middle ages is the period in the past from about 500 to 1500 BCE.
To remember the definition of the word medieval, use the following mnemonic:
A medal he had for being evil (medieval) was placed in the middle of his forehead, and he had to keep it on for ages (middle ages).

Examples of medieval in a sentence
She studies medieval artifacts at the museum.
He regularly attends medieval re-enactments.
She'd love to be able to see the medieval castle when it was first built.