As an adjective medieval
is medieval (of or relating to the middle ages).
As a noun kreutzer is
a medieval silver coin once used as currency in southern germany and austria.
* mediaeval, (used for archaizing effect although non-contemporary), medireview (autocorrected misspelling)
Of or relating to the Middle Ages, the period from about 500 to about 1500.
Having characteristics associated with the Middle Ages.
Someone living in the Middle Ages.
A medieval example (of something aforementioned or understood from context).
* Thank God for modern remedies, the medievals were often useless or even harmful.