Lily Savage's debut follows large breakout (5)
I believe the answer is:
lotus
'lily' is the definition.
I cannot understand how the remainder of the clue works.
(Other definitions for lotus that I've seen before include "Mythological fruit - lily" , "British sports and racing car manufacturer" , "Water-lily; yoga position" , "Mythical plant inducing languor" , "Tropical water-lily" .)