metal bowl
鋺 centers on a metal bowl, specifically a bowl made of metal.
鋺 combines 金 (metal) with 宛, which likely contributes the sound エン. The character specifically denotes a metal bowl.
The left side 金 means metal, and the right side 宛 looks like a container under a roof. Picture a metal bowl (金) shaped like a deep dish (宛) for holding food.
For エン, imagine an elegant metal bowl engraved with the letter 'N': the 'N' sound cues エン, and the bowl is made of metal.