"Bunk" refers to a type of bed, typically a wooden or metal frame, that is stacked one on top of another to save space. This design is commonly used in places like dormitories, summer camps, and children's rooms, allowing multiple people to sleep in a smaller area. Bunk beds often come with safety features, such as guardrails and ladders, to ensure the safety of those using the upper bunk. In a different context, "bunk" can also mean nonsense or something that is not true. This usage is often found in informal conversations, where someone might say, "That's a bunch of bunk!" to express disbelief or to dismiss an idea as unworthy of consideration.