Rust, noun: a reddish brown substance that forms on iron and steel when it comes into contact with water. Rust also refers to a fungal infection of certain plant species, resulting in reddish-brown patches on the leaves. When iron and steel rust they lose their strength. Rust flakes when you run your hand over it, leaving sharp needles of decay on your fingertips. It builds over time, creating mottled layers of burnt umber hues. I brush the flakes away on my jeans and wonder how many dips in the lake it took before the layers began to build upon us.