Noun
A wrinkle; a fold; as, the rugae of the stomach.
Source: Webster's dictionaryrugae of the stomach Source: Internet
Plutarch attributes this innovation to Spurius Carvilius Ruga around 230 BC, but it may have originated with Appius Claudius Caecus in the fourth century BC. Source: Internet
Montalcino is divided, like most medieval Tuscan cities, into quarters called contrade, Borghetto, Travaglio, Pianello and Ruga, each with their own colors, songs and separate drum rhythms to distinguish them. Source: Internet