Solutions A highly poisonous substance has 6 entries with similar clues
- 5-letter words
- mambaA large highly poisonous snake
- 7-letter words
- biocideA substance that is poisonous to living organisms
- hemlockHighly poisonous relative of parsley
- 8-letter words
- atropinePoisonous substance manufactured in a European port
- 9-letter words
- death-capHighly poisonous toadstool
- 11-letter words
- black-widowA highly poisonous American spider having a black body with red markings