Crossword Genius

Do the same with the ten on top (4)

Ross

I believe the answer is:

apex

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

'top' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for apex that I've seen before include "The highest point or peak" , "Pointed top" , "white collar union" , "Summit - pinnacle" , "The highest point or pointed end" .)

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.