laughing gas

American  

noun

1. nitrous oxide.

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laughing gas British  

noun

1. another name for nitrous oxide

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laughing gas Scientific  

/ lăf′ĭng /

1. Nitrous oxide used as a mild anesthetic.

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Etymology

Origin of laughing gas

First recorded in 1835–45

Example Sentences

Nitrous oxide, also known as laughing gas, is commonly used as a painkiller in medicine and dentistry, but it is frequently used as a recreational drug.

From BBC

“So I wear that when I work with my patients, when they look horrified or complain, I quietly cut back on the laughing gas.”

From Los Angeles Times

Three men who helped import 91 million canisters of laughing gas into the UK through a series of bogus catering firms have been jailed.

From BBC

Nitrous oxide – known colloquially as "laughing gas" – has many uses, from a painkiller during dental procedures to a whipping agent for canned whipped cream.

From BBC

A driver who inhaled laughing gas and killed a woman while speeding in a Mercedes has been jailed for five years.

From BBC