"Concealed" refers to something that is hidden or not easily visible. This can apply to various contexts, such as objects, information, or even emotions. For example, a secret compartment in furniture is designed to keep items out of sight, while concealed carry refers to the practice of carrying a firearm in a hidden manner. In nature, many animals use concealment as a survival tactic. For instance, a chameleon can change its color to blend in with its surroundings, making it difficult for predators to spot. Similarly, camouflage is used in military applications to hide personnel and equipment from enemy detection.