"Peggy Sue” singer (5)
I believe the answer is:
holly
'peggy sue singer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for holly that I've seen before include "Shrub with scarlet berries" , "Evergreen tree with spiky leaves" , "Evergreen used in wreaths" , "Festive berry" , "It has red berries and glossy leaves with prickles" .)