言げん語ご島とうげんごとうMeanings1nounlanguage island; speech islandlinguisticsLinguistics term for a language community surrounded by a different language area.この地ち域いきには、少しょう数すう言げん語ごの言げん語ご島とうが点てん在ざいしている。Language islands of minority languages are scattered throughout this region.