I love to visit old fighter in Mayo (5)
I believe the answer is:
aioli
'mayo' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's an association between them I don't understand?
'i love to visit old fighter' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'to visit' is an insertion indicator (inserted letters visit others).
'old fighter' becomes 'ali' (I've seen this before).
'i'+'o'='io'
'io' put inside 'ali' is 'AIOLI'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for aioli that I've seen before include "garlic sauce" , "Garlic mayo" , "Dressing" , "garlic dip" , "Garlicky mayonnaise" .)