- The definition of leonine is someone or something that is like a lion.
An example of a leonine person is a person with a big mane of fluffy hair.
This womans hair could be described as leonine.
leonine definition by Webster's New World
Origin: Middle English ; from Old French leonin ; from Classical Latin leoninus ; from leo, lion
leonine definition by American Heritage Dictionary
Origin: Middle English, from Old French leonin, from Latin leōnīnus, from leō, leōn-, lion; see Lion .
leonine - Medical Definition