Native maybe held by boys, terrified (6)
I believe the answer is:
oyster
'native maybe' is the definition.
(native oyster is a type of oyster)
'held by boys terrified' is the wordplay.
'held by' indicates the answer is hidden within the clue.
'OYSTER' can be found hidden inside 'boys terrified'.
(Other definitions for oyster that I've seen before include "Bivalve native" , "Succulent shellfish" , "pale pink" , "Content of stew" , "Mollusc with shucks" .)