Ba·con n. The back and sides of a pig salted and smoked; formerly, the flesh of a pig salted or fresh.
Bacon beetle Zool., a beetle (Dermestes lardarius) which, especially in the larval state, feeds upon bacon, woolens, furs, etc. See Dermestes.
To save one's bacon, to save one's self or property from harm or loss. [Colloq.]