cov·e·nant·er 
(kŭvə-năn′tər)
(kŭvə-năn′tər)n.
1. One who makes a covenant.
2. Covenanter A Scottish Presbyterian who supported either of two agreements, the National Covenant of 1638 or the Solemn League and Covenant of 1643, intended to defend and extend Presbyterianism.