Crossword Genius

Fighter, eg wrestler (not small), stopped early with wound (12)

Ross

I believe the answer is:

welterweight

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'fighter' is the definition.
(I know that welterweight is a type of wrestler)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for welterweight that I've seen before include "Boxer (147 lbs max)" , "Boxing category" .)

I've seen this clue in The Guardian.
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