An iron cot is a type of bed that is made of iron and commonly used in military barracks, hospitals, and camping sites. Synonyms for iron cot include metal bed, steel cot, bunk bed, camp bed, folding cot, and rollaway bed. The term metal bed refers to any bed that is made of metal, while steel cot specifically denotes one that is made of steel. A bunk bed is a type of metal bed that has two or more stacked beds, and is commonly used in dormitories and children's bedrooms. Camp bed and folding cot both refer to portable camping cots that are easy to fold and store. Rollaway bed is a type of folding cot that can be easily moved and stored away when not in use.