The bottom drawer of an oven can serve different purposes depending on the type of oven. Here are the most common uses:

• Warming Drawer: A warming drawer is a drawer that keeps already-cooked foods warm until dinnertime so that they can be served at the right temperature. If your oven has a warming drawer, it will typically have a button labeled "Warming Drawer" on the control panel.

• Broiler Drawer: If you have a gas oven, the bottom drawer may be a broiler drawer. A broiler uses heat from flames above to cook food, and it is best for toasting or browning foods like casseroles or breads. If your oven has a broiler drawer, it will typically have a control labeled "Broil" or "Broiler" on the control panel.

• Storage Drawer: If the bottom drawer looks like a deep, empty drawer, it is likely a storage drawer. This is a good place to store oven trays and other cooking utensils.

It is important to note that the bottom drawer can get very warm, so it is not recommended to store anything in it that may melt or catch fire, including flammable materials like paper, plastic, and cloth items, as well as flammable liquids. Explosives like aerosol cans should also not be stored on or near the appliance.