It's a complicated question since depending on the theory you use, the definition of intelligence change. The IQ is getting more and more controversed. Another concept is intelligence split in 8 sphere, (i don't recall all of them but for exemple music is one of them) being intelligent would mean to have an easier time acquiring skills in this field or to have accumulated a vast ammount of knowledge.

Let's just say that there isn't a global consensus on what define intelligence yet.