Definitions:
(in greek mythology) a fire-breathing female monster with a lion's head, a goat's body, and a serpent's tail.

a thing which is hoped for but is illusory or impossible to achieve

an organism containing a mixture of genetically different tissues, formed by processes such as fusion of early embryos, grafting, or mutation

a cartilaginous marine fish with a long tail, an erect spine before the first dorsal fin, and typically a forward projection from the snout.