_The Grogog of a Castle._--It appears by a record of the Irish Exchequer of
3 Edw. II., that one Walter Haket, constable of Maginnegan's Castle in the
co. of Dublin, confined one of the King's officers in the _Grogog_ thereof.
Will you permit me to inquire, whether this term has been applied to the
prison of castles in England?