nos
n.— «“Nos” or “laughing gas” as it is known, is sold in silver canisters used to whip cream, and had been readily available at dairies and some hardware stores.» —“Gas sniffs killed boy?” by Alice Hudson Hawke’s Bay Today (New Zealand) Apr. 15, 2005. (source: Double-Tongued Dictionary)
Further reading
Book recommendations and the art of apology. Martha and Grant share some good reads, including an opinionated romp through English grammar, a Spanish-language adventure novel, an account of 19th-century dictionary wars, and a gorgeously illustrated...
To fossick meaning “to rummage about,” derives from the use of fossicking for the practice of literally digging about for gemstones in abandoned mining excavations, a hobby that’s particularly popular in Australia and New Zealand...