Old explorer not about to drop hamper (7)
I believe the answer is:
shackle
'hamper' is the definition.
(I know that hamper can be written as shackle)
I don't understand the rest of the clue.
(Other definitions for shackle that I've seen before include "Chain, restrain" , "Hobble" , "Pair of fetters" , "Chain, limit" , "Chain with fetters" .)