Something purely aesthetically pleasing, that is, pleasing to the senses. Can be a person, a film, a sunset, a flower, or anything else you can see.

someone you find attractive

Women that are HOT and you can't take you eyes off of them. Like a kid in a candy store.

To think that the male/female is attractive, but often used for strangers or a person you wouldn't necessarily want to be with, but is pleasing to look at.

A super hot female hottie that is very pleasing to the eye. A babe. A very attractive female.

"quod vissum placet" or "that which pleases upon sight" (Thomas Aquinas)

(n) An attractive female, however lacking in
substance or intelligence (hence the term "candy").