The high point is seeing what the circus performers wear (6)

I believe the answer is:

tights

I'm a little stuck... Click here to teach me more about this clue!

'wear' is the definition.
(tights is a kind of wear)

I don't understand the rest of the clue.

(Other definitions for tights that I've seen before include "form of legwear" , "Ballet wear" , "Close fitting garment" , "Women's garment worn in place of stockings" , "Item of hosiery" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.