From Wiktionary, the free dictionary
From a diminutive derivative of Latin rotundus. Compare Italian tondeggiante, from tondo.
tunduleîno
- round; roundish
1877, Antonio Ive, Canti popolari istriani: raccolti a Rovigno, volume 5, Ermanno Loescher, page 128:El me vedisso cusseî tunduleîna,- He would see me so round,