Bar with nude dancing -- nothing might suggest lewdness (8)
I believe the answer is:
innuendo
'might suggest lewdness' is the definition.
(lewd or suggestive phrasing)
'bar with nude dancing nothing' is the wordplay.
'bar' becomes 'inn' (I've seen this in other clues).
'with' means one lot of letters go next to another.
'dancing' indicates an anagram.
'nothing' becomes 'o' (looks like zero - 0).
'nude' is an anagram of 'uend'.
'inn'+'uend'+'o'='INNUENDO'
(Other definitions for innuendo that I've seen before include "Suggestive allusion" , "Suggestive remark" , "sneaky reference" , "Suggestiveness" , "Indirect reference to something rude" .)