Maiden bus tour oddly avoided Alabama? It's common! (6)
I believe the answer is:
mutual
'common' is the definition.
(I know that common can be written as mutual)
'maiden bus tour oddly avoided alabama?' is the wordplay.
'maiden' becomes 'm' (cricket abbreviation).
'oddly avoided' indicates alternate letters (letters in odd-numbered positions removed).
'alabama?' becomes 'al' (abbreviation).
'bus'+'tour'='bustour'
The alternating letters of 'bustour' are 'utu'.
'm'+'utu'+'al'='MUTUAL'
'it's' is the link.
(Other definitions for mutual that I've seen before include "Affecting both parties" , "Common to two or more" , "like Dickens's friend?" , "Feeling for each towards the other" , "Held in common" .)