Vegetables returning the end of this month (4)
I believe the answer is:
yams
'vegetables' is the definition.
(yam is a kind of vegetable)
'returning the end of this month' is the wordplay.
'returning' says the letters should be written backwards.
'the end of' says to take the final letters.
'month' becomes 'may' (May is an example**).
The last letter of 'this' is 's'.
's'+'may'='smay'
'smay' backwards is 'YAMS'.
(Other definitions for yams that I've seen before include "Edible tubers from the tropics" , "Sweet potatoes" , "vegetables" , "Roots" .)