In a way, stole on to a train, perhaps (6)
I believe the answer is:
aboard
'on to a train perhaps' is the definition.
(aboard a train)
'in a way stole' is the wordplay.
'in' is an insertion indicator.
'way' becomes 'rd' (short for road).
'stole' becomes 'boa' (both can mean a type of scarf).
'a'+'rd'='ard'
'ard' enclosing 'boa' is 'ABOARD'.
(Other definitions for aboard that I've seen before include "on boat, perhaps" , "On a ship, train, plane or other vehicle" , "on a liner, say" , "... [CRUISE SHIP] here, perhaps" , "Alongside" .)