|another name for nitrous oxide|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a chattering or flighty, light-headed person.|
laughing gas laugh·ing gas (lāf'ĭng)
Nitrous oxide, especially as used as an anesthetic.
|laughing gas (lāf'ĭng) Pronunciation Key
Nitrous oxide used as a mild anesthetic.