| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a chattering or flighty, light-headed person. |
laughing gas laugh·ing gas (lāf'ĭng)
n.
Nitrous oxide, especially as used as an anesthetic.
| laughing gas (lāf'ĭng) Pronunciation Key
Nitrous oxide used as a mild anesthetic. |