Crossword Genius

Gets better of teachers (7)

Ross

I believe the answer is:

masters

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

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

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for masters that I've seen before include "Boys" , "Artists of consummate skill" , "Could be checkers" , "competition today" , "Higher degree" .)

I've seen this clue in The Globe and Mail.
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