What is "splent coal"

Splent \Splent\ (spl[e^]nt), n.

1. See Splent.

2. See Splent coal, below.

   Splent coal, an inferior kind of cannel coal from Scotch collieries; -- called also splent, splint, and splint coal.

alt. An inferior kind of cannel coal from Scottish colliery. n. An inferior kind of cannel coal from Scottish colliery.