Anybody going by with a boy (6)
I believe the answer is:
person
'anybody going' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'with a boy' is the wordplay.
'with' is a charade indicator (letters next to each other).
'a' becomes 'per' (eg 'one a day' means 'one per day').
'boy' becomes 'son' (synonyms).
'per'+'son' is 'PERSON'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for person that I've seen before include "Individual human being" , "Type" , "A man or woman" , "present appearing in this" , "Bod" .)