Drawing in front of an empty bus no good after biro edit (9)

'drawing' is the definition.
('absorb' can be a synonym of 'draw')

'front of an empty bus no good after biro edit' is the wordplay.
'front of' says to take the initial letters (the letter at the front of the word).
'empty' says to hollow out the word (remove centre letters).
'no good' becomes 'ng' (abbreviation).
'after' is a charade indicator (letters next to each other).
'edit' indicates an anagram (I've seen 'edited' mean this).
'bus' with its middle removed is 'bs'.
The initial letter of 'an' is 'a'.
'biro' anagrammed gives 'orbi'.
'ng' put after 'orbi' is 'orbing'.
'a'+'bs'+'orbing'='ABSORBING'

'in' is the link.