Floating marketing division (6)
I believe the answer is:
adrift
'floating' is the definition.
(similar in meaning)
'marketing division' is the wordplay.
'marketing' becomes 'ad' (advertisement is a type of marketing).
'division' becomes 'rift' ().
'ad'+'rift'='ADRIFT'
(Other definitions for adrift that I've seen before include "(Of boat) moving out of control" , "like Mary Celeste?" , "'Floating without direction, not tied up (6)'" , "No longer fixed in position" , "Unsettled or unanchored" .)