Greeting a liberal with nothing and laugh (5)
I believe the answer is:
aloha
'greeting' is the definition.
(I've seen this in another clue)
'a liberal with nothing and laugh' is the wordplay.
'liberal' becomes 'l' (abbreviation).
'with' is a charade indicator (letters next to each other).
'nothing' becomes 'O' (looks like zero - 0).
'and' is a charade indicator (letters next to each other).
'laugh' becomes 'ha'.
'a'+'l'+'o'+'ha'='ALOHA'
(Other definitions for aloha that I've seen before include "A halo seen in Polynesian greeting" , "16 across in Hawaii" , "A Polynesian hello or goodbye" , "A greeting in Hawaii" , "Hawaiian "ciao"" .)