Definition of "artlang"
artlang
noun
plural artlangs
A conlang created for artistic purposes or aesthetic ideals.
Quotations
The idea was for "functionlang" to be a useful term to describe a certain group of conlangs that weren't fitting into the pattern. Those being the (relatively rare) conlangs that were not artlangs, logiclangs, or auxlangs, but instead designed around some *other* specified purpose(s).
1997 November 18, Jack Durst, “Proposal: new language-type name (fwd)”, alt.language.artificial.ngl, Usenet
It is my artlang, spoken on an archipelago in the mid-Atlantic, somewhat south of the Azores and northwest of Madeira. The liturgical language has a number of _very_ exotic sounds, partly to indicate that it is not the normal language of the street (these sounds include several velaric egressive sounds, ie reverse clicks; one or two apicovelars; nareal fricatives; and a few others).
1998 January 8, Paul Roser, “Help with phonological transcription”, list.sci.lang.constructed, Usenet