Most probably from Latin "ǔter" [goatskin/leather bag; wineskin] (compare Ludri; ws); Mentioned in an Italian magazine about the Ladino language; NB¹: It is conceivable that the initial "L" is a remnant of the definite article (which was introduced when the term entered the Italian language area). NB²: ➺ Lodèr (Emilia-Romagna, Italy), and homonym (Croatia).