As an AI language model, I cannot provide an accurate definition of "turbo cancer" as the term is not widely recognized or used in any medical or scientific context. It may be a slang or colloquial term used to describe a particularly aggressive or fast-spreading form of cancer, but without more information or context, it is impossible for me to provide a more specific answer. It is important to refer to established medical terminology and consult a medical professional for accurate information about cancer diagnosis, treatment, and management.