mackintosh /ˈmak(ɪ)ntɒʃ
/ (also macintosh) ▸ noun British English a full-length waterproof coat. ▪ [mass noun, usually as modifier] dated cloth waterproofed with rubber: a mackintosh hat.
– ORIGIN mid 19th century: named after Charles Macintosh (1766–1843), the Scottish inventor who patented the cloth.