oy·er and ter·mi·ner 
(oiər; tûrmə-nər)
(oiər; tûrmə-nər)n.
Law
Law
1. A court of general criminal jurisdiction in some states of the United States.
2.
a. A commission empowering a judge in Great Britain to hear and rule on a criminal case at the assizes.
b. The court in Great Britain where such a hearing is held.
[Middle English, partial translation of Anglo-Norman oyer et terminer, to hear and determine : oyer, to hear + terminer, to determine.]