One leaving lingerie promotion possibly somehow reanimated (6)
I believe the answer is:
undead
'somehow reanimated' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'one leaving lingerie promotion' is the wordplay.
'one leaving lingerie' becomes 'unde' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'promotion' becomes 'ad' (short for advert).
'unde'+'ad'='UNDEAD'
'possibly' acts as a link.
Can you help me to learn more?
(Other definitions for undead that I've seen before include "Reanimated being(s)" , "Like a zombie" , "like vampires" .)