Wash out large piece of material (5)
I believe the answer is:
shawl
'piece of material' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'wash out large' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'large' becomes 'L' (eg in clothes sizes).
'wash' with letters rearranged gives 'shaw'.
'shaw'+'l'='SHAWL'
Can you help me to learn more?
(Other definitions for shawl that I've seen before include "Cloth wrapped over one's shoulders" , "Stole or wrap" , "Cloak, wrap" , "Covering for baby" , "Wrapped clothes item" .)