Definitions:

1. A box-like container with thick sides that is insulated and filled with ice to keep things cool, especially food and drinks. NOUN
   • The loaded the ice chest with drinks and snacks for the beach trip.
2. A portable container designed to keep its contents cold, typically by using insulation and ice or ice packs. NOUN
   • The fishermen packed their catch in a large ice chest to keep it fresh.

Synonyms:

• chilling box
• cold-storage box
• cooler
• icebox