Definition: The word 'amphioxuses' in Greek refers to the toxic, venomous creatures that live on top of a volcano or mountain's summit. The term was originally used to describe the venom found within these animals. It has since become more widely known as a term for any type of amphibian, a type of reptile that can be found in various habitats. The definition of 'amphioxuses' is: 1. Amphibians: A group of vertebrates that lay their eggs and give birth in moist environments such as water, mud, or soil. 2. Poisonous animals: All creatures with venomous saliva (like snakes). 3. Toxins: Inanimate substances that can cause harm to living organisms when ingested. The term 'amphioxuses' is used in literature for various purposes and refers to both the venom and the species of animals they mimic in order to create a metaphorical comparison.