See also: ISL and isl. Translingual Etymology Clipping of Icelandic íslenska. Symbol isl (international standards) ISO 639-2/T & ISO 639-3 language code for Icelandic. See also Wiktionary’s coverage of Icelandic terms English Noun isl (uncountable) Abbreviation of island.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads