1. a marine animal with a soft, transparent, bell-shaped body and long tentacles that can sting

Examples

• The jellyfish floated gracefully through the water.
• She was stung by a jellyfish while swimming at the beach.
• The aquarium has a beautiful display of colorful jellyfish.
• Large jellyfish washed up on the shore after the storm.
• Some jellyfish are nearly transparent and hard to see.
• The moon jellyfish is one of the most common species.