nonjuror. 1. Someone who is not serving as a juror. 2.Hist. A person who refused to pledge allegiance to the sovereign; specif., in England and Scotland, a clergyman who, after 1688, refused to break the oath to James II and his heirs and successors, and to recognize William of Orange as king. • In Scotland, a nonjuror was also recognized by the Presbyterian Church as a clergyman who refused to renounce the Episcopal Church when it was disestablished in 1690 in favor of Presbyterianism.

[Blacks Law 8th]