Scottish lake (4,4)
There are a few possibilities for this:
loch ness
'scottish lake' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ness that I've seen before include "Scottish Loch with legendary monster" , "Famous loch" , "Headland, cape" , "Scottish loch - headland" , "Scottish lake with traditional monster" .)
'scottish lake' is the definition.
(type of body of water)
This is all the clue.
(Other definitions for loch that I've seen before include "A Scottish lake like Lomond" , "Body of (Scottish?) water" , "A Scottish lake like Ness" , "Ness or Lomond, for instance" , "Scots lake" .)
'scottish lake' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for loch ness that I've seen before include "where monster lurks?" , "waters" , "deep water" , "Great Glen water" , "Scottish lake famed for mythical monster" .)