Sorry, couldn't find any words matching imouto.
You can also try a search for いもうと.
More reading
- Tae Kim's Guide to Learning Japanese: Addressing People
- IMABI: Nouns and Pronouns
Names — 3 found
いもうといし
【妹石】
1. Imoutoishi
いもうとじま
【妹島】
1. Imoutojima
いもうとぬま
【妹沼】
1. Imoutonuma