coalbag means A bag for the storage of coal. Lexicurio rates it Sui generis — a strength score of 85 out of 100.
Etymology
From coal + bag.
noun
- A bag for the storage of coal.““Kitten,” he said gently. “Go round ont' Daddy's back, like a coalbag, a wee coalbag. Kitten, can y'hear me?””