A mythical monster having the head of man (with horns) and the body of a lion and the tail of a scorpion WordNet 3.0 & Open English WordNet

The manticore or mantichore is a Persian legendary creature similar to the Egyptian sphinx that proliferated in western European medieval art as well. Wikipedia

Mythical creature similar to a chimera. Wikipedia Disambiguation

A legendary creature in Persian and Greek mythology with the body of a lion, a human head and the tail of a dragon or a scorpion. OmegaWiki

A beast with the body of a lion (usually red), the tail of a scorpion, and the head/face of a man with a mouth filled with multiple rows of sharp teeth (like a shark), said to be able to shoot spikes from its tail or mane to paralyse prey. It may be horned, winged, or both; its voice is described as a mixture of pipes and trumpets. Wiktionary

Mythical creature. Wiktionary (translation)