Figure as a noted Loch (6)
I believe the answer is:
eleven
'figure' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Maybe there's a link between them I don't understand?
'a noted loch' is the wordplay.
'a noted' becomes 'e' (I can't explain this - if you can you should believe this answer much more).
'loch' becomes 'leven' (I've seen this before).
'e'+'leven'='ELEVEN'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for eleven that I've seen before include "Enough for a soccer side" , "Enough for a team" , "Cricketing side" , "Smallest positive three-syllable integer" , "Prime number" .)