Empty talk (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">empty talk</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gas that I've seen before include "Petrol (USA)" , "eg Helium" , "Neon, for example" , "Nitrogen, say" , "Hydrogen or oxygen, say" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">empty talk</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for hot air that I've seen before include "Bombast or balloon filler" , "Bull" , "Guff" , "is essential before the balloon goes up" , "Loud and empty talk to lift a balloon?" .)