Meaning of oyer and terminer

o'yer and ter'mi•ner

Pronunciation: (tûr'mu-nur), [key]
— Law. Law.
  1. (in some U.S. states) any of various higher criminal courts.
    1. a commission or writ directing the holding of a court to try offenses.
    2. the court itself.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.