Clare, for one, consumed by tennis lesson (4)
I believe the answer is:
isle
'clare' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'one consumed by tennis lesson' is the wordplay.
'one consumed by' indicates the answer is hidden within the clue (I've seen this in other clues).
'ISLE' can be found hidden inside 'tennis lesson'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for isle that I've seen before include "Dogs, maybe" , "Rum, for example" , "Eg, eyot or inch" , "Small island" , "Man's one" .)