From Longman Dictionary of Contemporary Englishburrobur‧ro /ˈbʊrəʊ $ ˈbɜːroʊ/ noun (plural burros) [countable] American EnglishHBA a small donkey
Examples from the Corpus
burro• I followed by car and burro, tracking him from town to town.• Unlike the unapproachable bison, the handout-loving burros eagerly greet motorists on the loop.• The kids sounded like a herd of wild burros.Origin burro (1800-1900) Spanish borrico, from Late Latin burricus “small horse” 