Oyer

noun

1. In law, a hearing or trial of causes.
2. The production of a document or copy of a document which an adversary has mentioned in his pleading; anciently, the hearing of the reading of such document. In early times often called oyer and determiner.
3. A hearing or an inspection, as of a deed, bond, etc., .

   "as when a defendant in court prays oyer of a writing"

4. a term used in England in commissions directed to judges of assize about to hold court, directing them to hear and determine cases brought before them. In the U.S. the phrase is used to designate certain criminal courts.
5. A hearing in a civil case which is based on the content of a document, in which the plaintiff is required to produce the document.