地名　羅臼／Rausu／ra-us-i(魚の内臓・あるところ＝fish entrails, a lot of, place)(低いところ・にある・もの＝low land, there are, it)ちめい　らうす

Rausu / ra-us-I (＝fish entrails, a lot of, place) (＝low land, there are, it), from the Series Place Name