Lose argument about the Med, say (3)
I believe the answer is:
sea
'med say' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'lose argument about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'SEA' can be found hidden inside 'lose argument'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for sea that I've seen before include "Watery expanse" , "Adriatic, for example" , "The deep" , "It's stocked with fish" , "Marine" .)