also drug-store, 1810, American English, "pharmacy, store that sells medications and related products," from drug (n.) + store (n.). Drug-store cowboy is 1925, American English slang, originally someone who dressed like a Westerner but obviously wasn't.
also ratfink, 1963, teen slang, see rat (n.) + fink (n.). Popularized by, and perhaps coined by, U.S. custom car builder Ed "Big Daddy" Roth (1932-2001), who made a hot-rod comic character of it, supposedly to lampoon Mickey Mouse.
also dogleg, "bent like a dog's hind leg," 1843, earlier dog-legged (1703), which was used originally of a type of staircase which has no well hole and consists of two flights with or without winders. See dog (n.) + leg (n.).