Bulbous plant making a comeback in Rhyl, I learn (4)
I believe the answer is:
lily
'bulbous plant' is the definition.
(I know that lily is a type of liliaceous plant)
'a comeback in rhyl i learn' is the wordplay.
'a comeback' is a reversal indicator.
'in' indicates a hidden word.
'ylil' is hidden within 'rhyl i learn'.
'ylil' reversed gives 'LILY'.
'making' is the link.
(Other definitions for lily that I've seen before include "Trumpet-shaped flowering plant" , "Bulbous flowering plant" , "Tiger -; water -" , "Bulbous plant with trumpet-shaped flowers" , "Plant with showy pendulous flowers" .)