Stars in a role of some importance (3)
I believe the answer is:
leo
'stars' is the definition.
(constellation)
'a role of some importance' is the wordplay.
'LEO' is hidden in amongst the letters.
However, I am not sure how this is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for leo that I've seen before include "Astrological sign" , "born in July or August" , "Man" , "Fifth sign of the zodiac" , "certain stars" .)