Proper sort of pink flower (8)
I believe the answer is:
primrose
'flower' is the definition.
(thesaurus)
'proper sort of pink' is the wordplay.
'proper' becomes 'prim' ('prim' can be similar in meaning to 'proper').
'sort of pink' becomes 'rose'.
'prim'+'rose'='PRIMROSE'
(Other definitions for primrose that I've seen before include "Early spring flower" , "Rip morse up to find the flower" , "something in the bed!" , "grows wild" , "Woodland plant with yellow flowers in spring" .)