1.
intellectual, relating to intellect
Relating to or involving the intellect or mental activity. Used to describe things that are academic, cerebral, or intellectually oriented.
2.
intelligent-looking, refined
Describing a person who gives an impression of intelligence or cultivation, often based on appearance or manner.
Usage
知的 functions as a な-adjective. Sense 1 describes things related to intellectual pursuits or mental activity (often in compound terms). Sense 2 is a compliment about someone's refined, intelligent appearance or manner.