What is hold luggage and what are the restrictions or limitations associated with it when traveling?

Hold luggage refers to baggage that is checked in at the airport and stored in the cargo hold of the airplane during a flight. Restrictions and limitations associated with hold luggage when traveling typically include weight limits, size restrictions, and prohibited items such as liquids over 3.4 ounces, sharp objects, and flammable materials. It is important for travelers to adhere to these restrictions to ensure a smooth and safe journey.