Fishing gear left underwater

• Conger catcher's device
• Fish trap
• Trap for congers
• Fishing trap
• Bit of fishing equipment
• Trap for a fishy slitherer
• It's a trap
• Underwater trap

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Eelpot \Eel"pot`\, n. A boxlike structure with funnel-shaped traps for catching eels; an eelbuck.

Wiktionary Word definitions in Wiktionary
n. A device for catching eels; an eelbuck.