Imp takes prawn tail (5)
I believe the answer is:
scamp
'imp' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for scamp that I've seen before include "Impish youngster" , "villain" , "Scoundrel" , "Mischievous child (colloq.)" , "Mischief-maker" .)