object languageEnglishOxford New American Dictionaryobject language /ˈäbjək(t) ˌlaNGɡwij, ˈɑbdʒək(t) ˌlæŋɡwɪdʒ / ▸ noun 1 a language described by means of another language. Compare with metalanguage, target language. 2 Computing a language into which a program is translated by means of a compiler or assembler.