countershed means A shed (area between warp yarns) with different yarns from a previous one. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
noun
- A shed (area between warp yarns) with different yarns from a previous one.“ww ſind die beiden gekrümmten Urme oder Pedale, welche die Gegenöffnung (countershed tappets) bewirken[…]”