Major waterway (3)
I believe the answer is:
sea
(Other definitions for sea that I've seen before include "Vast expanse" , "North for one" , "E.g Aral or Weddell" , "The briny" , "eg Galilee" .)
I believe the answer is:
sea
(Other definitions for sea that I've seen before include "Vast expanse" , "North for one" , "E.g Aral or Weddell" , "The briny" , "eg Galilee" .)