noun
mackintosh
MAK-in-tosh/ˈmækɪntɑːʃ/
A waterproof coat worn in the rain.
Water beads on the man's mackintosh as he stands in light rain.

Etymology
Macintosh is the surname of Charles Macintosh, who invented a waterproofing process. His name became the name of a waterproof outer coat.
In context
one dark, and terrible wet, mornin', out on the cliff near Rimton Gap. As I passed by he was a talkin' to a tall young man in a drab mackintosh.
More examples
- He hangs his wet mackintosh by the door.
- Take your mackintosh in case it rains.
- Their mackintoshes keep them dry through the downpour.
Forms
mackintosh · mackintoshes
Similar words
- raincoat
- The usual American term for any coat worn against rain.
- slicker
- Usually suggests a raincoat with a smooth, waterproof outer surface.