JMdict entry #1482490

1. noun (common) (futsuumeishi) archaic language spoken by the Emishi
   see: 蝦夷・1
2. noun (common) (futsuumeishi) archaic languages spoken by the nanban during the Edo Period (e.g. Spanish, Portuguese, Dutch)
   see: 南蛮・3
3. noun (common) (futsuumeishi) archaic foreign language