In nervous state, throw coconut perhaps at head (7)
I believe the answer is:
shyness
'in nervous state throw coconut' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'perhaps at head' is the wordplay.
'perhaps' becomes 'shy' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' says to put letters next to each other.
'head' becomes 'ness' (ness is a headland).
'shy'+'ness'='SHYNESS'
Can you help me to learn more?
(Other definitions for shyness that I've seen before include "Diffidence" , "Modesty, reticence" , "Timidity in company" , "Retiring quality" , "Nervousness, timidity" .)