someone who has exceptional intellectual ability and originality
Mozart was a child genius. He's smart but he's no Einstein.
source: WordNet 3.0
unusual mental ability
source: WordNet 3.0
someone who is dazzlingly skilled in any field
source: WordNet 3.0
exceptional creative ability
source: WordNet 3.0
a natural talent
He has a flair for mathematics. He has a genius for interior decorating.
source: WordNet 3.0
A good or evil spirit, or demon, supposed by the ancients to preside over a man's destiny in life; a tutelary deity; a supernatural being; a spirit, good or bad. Cf. Jinnee.
