Definition of laughing gas in English:
Nontechnical term for nitrous oxide.
- Nitrous oxide, or laughing gas, is replacing the After Eight as the post-dinner treat in some circles.
- Can I bring a couple of friends along to your next laughing gas party?
- We agreed that I would bring the clams and he would bring the laughing gas.
Definition of laughing gas in:
- British & World English dictionary
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