Uniform feeds public image (6)
I believe the answer is:
statue
'image' is the definition.
(thesaurus)
'uniform feeds public' is the wordplay.
'uniform' becomes 'u' (phonetic alphabet: alpha, bravo, charlie etc.).
'feeds' means one lot of letters goes inside another.
'public' becomes 'state' ('state' can be similar in meaning to 'public').
'u' placed within 'state' is 'STATUE'.
(Other definitions for statue that I've seen before include "permanent fixture" , "Stone figure" , "Modelled figure of a human or animal" , "Still work" , "Use tat (anag.)" .)