In which swimmers may finish up canned (5)
I believe the answer is:
brine
'in which swimmers may finish up canned' is the definition.
The definition and answer can be both substances as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'in' is the wordplay.
I cannot quite understand how this works, but
'in' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for brine that I've seen before include "Sea water" , "Strong salt-water solution" , "preservative" , "pickle" , "Seawater" .)