Crossword Genius

A beginner in athletics? (7)

Ross

I believe the answer is:

starter

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

'a beginner' is the definition.
(starter is a kind of beginner)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for starter that I've seen before include "No substitute" , "cooking served first?" , "Beginner, or opening course of meal" , "Appetiser" , "One giving signal to begin race" .)

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