Hva er skeleton? Hva er skeleton? The internal structure composed of bone and cartilage that protects and supports the soft organs, tissues, and other parts of a vertebrate organism; endoskeleton.The hard external supporting and protecting structure in many invertebrates, such as mollusks and crustaceans, and certain vertebrates, such as turtles; exoskeleton.A supporting structure or framework, as of a building.An outline or sketch.Something reduced to its basic or minimal parts.One that is very thin or emaciated.Of, relating to, or resembling a skeleton.Reduced to the basic or minimal parts or members: a skeleton crew. skeleton in (one's) closet A source of shame or disgrace, as in a family, that is kept secret.