The term SIMPLE BED can be broken down into two crossword solutions: COT (3 letters) and BUNK (4 letters). A COT is a type of bed that is typically used for camping or in military barracks. It is usually made of metal or canvas and is collapsible for easy storage. A BUNK bed is a type of bed that consists of two beds stacked on top of each other, with one bed above the other. It is often used in small spaces, such as dorm rooms, to maximize sleeping space. Both cots and BUNK beds are considered simple beds, as they are both relatively basic in design.