noun Date: 1874 any of a phylum (Platyhelmainthes) of soft-bodied usually much flattened acoelomate worms (as the planarians, flukes, and tapeworms)
FLATWORM
Meaning of FLATWORM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012