Large body of water (3)
'large body of water' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sea that I've seen before include "North for one" , "eg Galilee" , "E.g Aral or Weddell" , "The deep" , "Division of an ocean" .)
'large body of water' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ocean that I've seen before include "Very large area of sea" , "Vast sea" , "Great sea" , "It's pretty wet!" , "Large stretch of water" .)