For the origin of the pejorative "Presbyterian", several theories exist:
- A specialisation of a dialect sense "liar, slanderer, foul-mouthed person" applied to political radicals.
- Ulster Scots refusing to take the "Black Oath" imposed in 1639;
- Covenanters eating blackberries or blaeberries while hiding in the wilds during the The Killing Time.
blackmouth (plural blackmouths)
- A chinook salmon (Oncorhynchus tshawytscha), especially a juvenile.
- (derogatory, Ireland, dated) a Presbyterian
chinook salmon — see chinook salmon
- Anne Smyth, "Ulster-Scots Words with a Story": A Talk for Ormeau Gallery
- ^ Robert Tosh "Presbyterianism" Plantation of Ulster BBC History