# From Proto-Mongolic *seleme, compare Buryat һэлмэ (helme), Kalmyk селм (selm), Daur selmii, East Yugur seleme. # The Mongolic term is probably derived from Proto-Tungusic *sele, compare Evenki сэлэ (sələ, “iron”) and Manchu ᠰᡝᠯᡝᠮᡝ (seleme, “dagger”).