Gave away star (4)
I believe the answer is:
vega
'star' is the definition.
(Vega is an example)
'gave away' is the wordplay.
'away' indicates an anagram (letters move away from their original places).
'gave' is an anagram of 'VEGA'.
(Other definitions for vega that I've seen before include "heavenly body" , "Fifth brightest star" , "Gave turn to a star" , "First magnitude star" , "Star in Lyra; grassy plain (Spanish)" .)