Pack taken from highlands to waterside (4)
I believe the answer is:
stow
'pack' is the definition.
(I know that stow is a more specific form of the action pack)
'taken from highlands to waterside' is the wordplay.
'taken from' says the answer is hidden in the clue.
'STOW' is hidden within 'highlands to waterside'.
(Other definitions for stow that I've seen before include "Deposit" , "Put under the hatches" , "Pack, put away" , "Keep under hatches" , "Store away tidily" .)