Though brown, this pool has a red strip (5)
I believe the answer is:
liver
'though brown this pool' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'a red strip' is the wordplay.
I cannot really see how this works, but
'red' could be 'r' (I've seen this in other clues) and 'r' is found within the answer.
The remaining letters 'live' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'has' is the link.
Can you help me to learn more?
(Other definitions for liver that I've seen before include "Abdominal organ" , "Human organ" , "Hepatic organ" , "Bodily organ" , "Bile-secreting organ" .)