Crossword Genius

Briefly introduce celebrity (4)

Ross

I believe the answer is:

star

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

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

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for star that I've seen before include "Pointed symbol" , "Celebrity - heavenly body" , "Major" , "Famous performer" , "Brilliant person" .)

I've seen this clue in The Telegraph.
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