idiomatic expression

[Unregistered]

What is the meaning of the idiomatic expression keen on eye. Please use in a sentence.

[susiedqq]

Keen on the eye

I think it means "to look good."

"She is keen on the eye" means she is good looking.

Is it a British expression?

[Soup]

Actually, it's more like watch carefully, as in

Ex: Please keep an eye on the kids while I am out.
Ex: Keep an eye on the kite and watch where it goes.
Ex: He's keeping an eye on my bags while I am in the restroom.

[RonBee]

Actually, it's more like watch carefully, as in

Ex: Please keep an eye on the kids while I am out.
Ex: Keep an eye on the kite and watch where it goes.
Ex: He's keeping an eye on my bags while I am in the restroom.

That is, of course, spot on. But how did you know the poster meant "keep an eye on"?

[Soup]

I didn't. Old age, poor eyesight, and a bit 'a luck, I suppose, if that is the poster really did want to know keep an eye on.