Sheltered bay (4)
I believe the answer is:
cove
'sheltered bay' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cove that I've seen before include "Small bay or Dickensian chap" , "Sheltered accommodation" , "where the sea comes in" , "Small bay or coastal inlet" , "Sheltered bay, inlet" .)