What is Grust?
1.
calcium, lime, rust, and other such unsavoury substances, especially those tough to clean ones
"Man you just spilled 5 litres of bucket water on my carpet! That's grust."
See
2.
calcium, lime, rust, and other such unsavoury substances, especially those tough to clean ones
"Man you just spilled 5 litres of bucket water on my carpet! That's grust."
See