Pester star consuming ecstasy (5)
I believe the answer is:
beset
'pester' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for beset that I've seen before include "Attacked from all sides" , "Assail (with problems?)" , "Surrounded, under siege" , "surrounded by hostile forces" , "Press" .)