Seal heard in Lomond say (4)
I believe the answer is:
loch
'lomond say' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'seal heard' is the wordplay.
'seal' becomes 'lock' (seal can mean to lock up).
'heard' shows a homophone (sound like).
'lock' sounds like 'LOCH'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for loch that I've seen before include "Scottish or Irish lake" , "Scots lake" , "Ness or Lomond, for instance" , "Eg, Ness" , "A Scottish lake like Lomond" .)