He can just about stand up for himself (7)
I believe the answer is:
toddler
'he can just about stand up for himself' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'he' is the wordplay.
I cannot quite see how this works, but
'he' could be 'todd' and 'todd' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for toddler that I've seen before include "Infant" , "Child starting to walk" , "Small child" , "One taking first steps" , "Lord Ted (anag)" .)