soapflake means soap in the form of dried flakes, formerly used for washing clothes. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
Etymology
From soap + flake.
noun
- Soap in the form of dried flakes, formerly used for washing clothes.“A tablespoon of glycerine makes it glossy, or half a cup of soapflakes makes it lumpy.”