The term MEDUSA is a crossword solution that refers to two different creatures. The first is GORGON, a six-letter word which is a creature from Greek mythology with the head of a woman and the body of a snake. The second is JELLYFISH, a nine-letter word which is an aquatic invertebrate with a gelatinous umbrella-shaped bell and tentacles. Both Gorgons and JELLYFISH are known for their ability to paralyze their prey with their venom.