Cry when shut out for nothing (5)
I believe the answer is:
shout
'cry' is the definition.
(I know that cry can be written as shout)
'shut out for nothing' is the wordplay.
'out' means one lot of letters goes inside another.
'for nothing' becomes 'o' (I can't explain this - if you can you should give a lot more credence to this answer).
'shut' placed around 'o' is 'SHOUT'.
'when' acts as a link.
Can you help me to learn more?
(Other definitions for shout that I've seen before include "Raise one's voice" , "Yell" , "Noise" , "(Statement) with opposite sense intended" , "Bawl" .)