Try to get sun and plenty of it (6)
I believe the answer is:
sample
'try' is the definition.
(I know that try can be written as sample)
'sun and plenty of it' is the wordplay.
I cannot really understand how this works, but
'sun' could be 's' (abbreviation) and 's' is found in the answer.
'plenty' could be 'ample' (ample means enough or plenty) and 'ample' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'to get' is the link.
Can you help me to learn more?
(Other definitions for sample that I've seen before include "Test the specimen" , "A specimen of maples" , "Small representative piece" , "Specimen, try out" , "Taste; specimen" .)