A partner touring eastern area plant (4,4)
I believe the answer is:
aloe vera
'plant' is the definition.
The answer is an example.
'a partner touring eastern area' is the wordplay.
'partner' becomes 'lover' (romantic partner).
'touring' is an insertion indicator (touring can mean going round).
'eastern' becomes 'e'.
'area' becomes 'a' (maths abbreviation).
'lover' placed around 'e' is 'loever'.
'a'+'loever'+'a'='ALOE VERA'
(Other definitions for aloe vera that I've seen before include "type of juice" , "Plant product used in some cosmetics" , "Mediterranean plant whose thick leaves give off a soothing juice" , "cosmetic preparation" , "Succulent" .)