Truss accepting pound is failing to produce expected growth (5)
I believe the answer is:
blind
'failing to produce expected growth' is the definition.
I can't judge whether this defines the answer.
'truss accepting pound' is the wordplay.
'truss' becomes 'bind' (synonyms).
'accepting' is an insertion indicator (inserted letters are accepted).
'pound' becomes 'L' (the pound sign is based on an L).
'bind' placed around 'l' is 'BLIND'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for blind that I've seen before include "deception" , "shade" , "Drive very fast" , "without a way out" , "In the dark" .)