Definitionen
1.NounAny language (whether constructed or natural), such as Volapük, Esperanto, Swahili, French, Russian or English, used or intended to be used (locally, regionally, nationally or internationally) for intercommunication by speakers of various other languages.
2.NounEllipsis of international auxiliary language.
3.NounA local minority language which has official recognition.
4.NounA liturgical language, such as Latin, Sanskrit, or Old Church Slavonic, used in religious services.