One helps the chippy wash cod or skate's wings (8)
I believe the answer is:
sawhorse
'one helps the chippy' is the definition.
I can't judge whether this defines the answer.
'wash cod or skate's wings' is the wordplay.
'cod' indicates anagramming the letters (cod can mean fake or inauthentic).
'wings' means to remove the middle letters (the wings or edge letters of the word are used).
'skate' with its middle taken out is 'se'.
'wash' with letters rearranged gives 'sawh'.
'sawh'+'or'+'se'='SAWHORSE'
Can you help me to learn more?
(Other definitions for sawhorse that I've seen before include "stand for cutting" , "cutting support" , "Mobile carpentry station" , "Rack" , "support for chippy" .)