FalabellaPronunciation: /ˌfaləˈbɛlə/Definition of Falabella noun a horse of a miniature breed, the adult of which does not usually exceed 75 cm in height. Origin: late 20th century: named after Julio Falabella (died 1981), an Argentinian breederFalabella in other Oxford dictionaries Definition of Falabella in the US English dictionary