anorak (n.) Look up anorak at
Eskimo's waterproof, hooded jacket, 1924, from Greenland Eskimo anoraq. Applied to Western imitations of this garment from 1930s. In British slang, "socially inept person" (Partridge associates it with a fondness for left-wing politics and pirate radio) by 1983, on the notion that that sort of person typically wears this sort of coat.