Say, get sick of turning over leaves (7)
I believe the answer is:
foliage
'leaves' is the definition.
(I've seen this before)
'say get sick of turning' is the wordplay.
'say' becomes 'eg' (both can mean for example).
'get sick' becomes 'ail' (to ail is to become ill).
'turning' says the letters should be written in reverse.
'eg'+'ail'+'of'='egailof'
'egailof' in reverse letter order is 'FOLIAGE'.
'over' is the link.
(Other definitions for foliage that I've seen before include "Plant leaves collectively" , "Leaves of tree or plant" , "(Decorative) leaves" , "Green leaves" , "Cluster of leaves" .)