Caught heron hiding head in wooden box with strings (7)
I believe the answer is:
cittern
'wooden box with strings' is the definition.
I can't tell whether this definition defines the answer.
'caught heron hiding head' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'heron' becomes 'bittern' (bittern is a kind of heron).
'hiding head' means to remove the first letter.
'bittern' with its initial letter taken off is 'ittern'.
'c'+'ittern'='CITTERN'
'in' acts as a link.
Can you help me to learn more?
(Another definition for cittern that I've seen is " it used to be plucked".)