A ragman, possibly? (7)

I believe the answer is:

anagram

I'm a little stuck... Click here to teach me more about this clue!

'a ragman possibly?' is the definition.
I can't tell whether this definition defines the answer.

'a ragman possibly?' is the wordplay.
'possibly?' indicates an anagram (I've seen 'possibly' mean this).
'ragman' anagrammed gives 'nagram'.
'a'+'nagram'='ANAGRAM'

Can you help me to learn more?

(Other definitions for anagram that I've seen before include "1d for instance" , "Nag a ram (anag)" , ""Schoolmaster" is of "the classroom", for example" , "Word that rearranges another's letters" , "Mix-up" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app