Wood's supporter saying supplier of water needed around middle of April (8)
I believe the answer is:
sawhorse
'wood's supporter' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'supplier of water needed around middle of april' is the wordplay.
'supplier of' becomes 'saw' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'water' becomes 'hose' (water a flowerbed say).
'needed around' means one lot of letters goes inside another.
'middle of' indicates the central letters.
The central letter of 'april' is 'r'.
'hose' enclosing 'r' is 'horse'.
'saw'+'horse'='SAWHORSE'
'saying' is the link.
Can you help me to learn more?
(Other definitions for sawhorse that I've seen before include "Rack" , "cutting support" , "support for chippy" , "Mobile carpentry station" , "stand for cutting" .)