Pack taken from highlands to waterside (4)
I believe the answer is:
stow
'pack' is the definition.
(stowing is a kind of packing)
'from highlands to waterside' is the wordplay.
'from' indicates a hidden word.
'STOW' can be found hidden inside 'highlands to waterside'.
'taken' acts as a link.
(Other definitions for stow that I've seen before include "Deposit" , "Put under the hatches" , "Pack, put away" , "Keep under hatches" , "Store away tidily" .)