early 14c., "meat from the back and sides of a pig" (originally either fresh or cured, but especially cured), from Old French bacon, from Proto-Germanic *bakkon "back meat" (cf. Old High German bahho, Old Dutch baken "bacon"). Slang phrase bring home the bacon first recorded 1908; bacon formerly being the staple meat of the working class.
To save oneself; work one's preservation: We'd better act right now if we want to save our bacon (1654+)
a side of a pig that, after removal of the spare ribs, is cured, either dry or in pickle, and smoked. Some varieties, notably Canadian bacon, are cut from the loin portion of the pork, which is more lean