A Quick and Simple Dictionary

interdict

1. Noun.  A papal decree prohibiting the administration of the sacraments from a political entity under the power of a single person (e.g., a king or an oligarchy with similar powers). Exteme unction/Anointing of the sick are excepted.
2. Verb.  (transitive, Roman Catholic) To exclude (someone or somewhere) from participation in church services; to place under a religious interdict. (defdate, from 13th c.) .
3. Verb.  (transitive) To forbid (an action or thing) by formal or legal sanction. (defdate, from 16th c.) .
4. Verb.  (transitive) To forbid (someone) from doing something. (defdate, from 16th c.) .
5. Verb.  (transitive, US) To impede (an enemy); to interrupt or destroy (enemy communications, supply lines etc). (defdate, from 20th c.) .