Girl describes publicity dodge (5)
I believe the answer is:
evade
'dodge' is the definition.
('evade' can be a synonym of 'dodge')
'girl describes publicity' is the wordplay.
'girl' becomes 'eve' ().
'describes' means one lot of letters goes inside another (describe can mean to form the outline of).
'publicity' becomes 'ad' (advert).
'eve' enclosing 'ad' is 'EVADE'.
(Other definitions for evade that I've seen before include "To get away from" , "skirt" , "Dodge, stay clear of" , "Dodge, duck" , "Escape (something)" .)