le·o·nine 
(lēə-nīn′)
(lēə-nīn′)adj.
1. Of, relating to, or characteristic of a lion.
2. Resembling or suggestive of a lion, as in being powerful or dignified.
[Middle English, from Old French leonin, from Latin leōnīnus, from leō, leōn-, lion; see LION.]