Related Clues:
- Neither a liquid nor a solid
- Pilot feeder
- Gold initially like hydrogen, say?
- Auto fill
- Krypton or xenon
- Pedal next to the brake
- What H, O or N may represent
- Pal entertaining wife with good talk
- Energy metaphor
- He perhaps requires odd bits of glass
- Car expense
- Very entertaining local essential for 22 across to take off
- Empty talk in giving assessment
- Chatter (informal)
- A blast — methane, perhaps?