noun (common) (futsuumeishi) word usually written using kana alone Chinese soft-shelled turtle (Pelodiscus sinensis);soft-shelled turtle (Trionychidae)

noun (common) (futsuumeishi) only applies to すっぽん trap door located on the walkway in a kabuki theatre

noun (common) (futsuumeishi) only applies to すっぽん bilge pump (used on traditional Japanese ships)