First aid box is a container holding medical supplies for immediate treatment of minor injuries (cuts, scrapes, burns, sprains) before professional help arrives, containing essentials like bandages, gauze, antiseptic wipes, gloves, tape, cold packs, scissors, tweezers, and pain relievers, often in a clearly marked, waterproof case. It serves as a vital safety tool, preventing minor issues from worsening and infection from spreading, and should be kept stocked, accessible, and checked regularly for expired items.