One could do good as a guide (3)
I believe the answer is:
dog
'a guide' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?
'one could do good' is the wordplay.
I cannot quite see how this works, but
'do' is within the answer.
'good' could be 'g' (abbreviation) and 'g' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'as' is the link.
Can you help me to learn more?
(Other definitions for dog that I've seen before include "Domesticated canine" , "Follow closely; animal" , "'Every ... is allowed one bite'" , "Shadow" , "boxer?" .)
