Definition of "nang"

nang¹

/næŋ/

noun
plural nangs
1. (Australia, slang) A metal bulb filled with nitrous oxide gas, inhaled for its disassociative effects, normally intended as a propellant for whipped cream.
  Quotations
  I reckon the thing that brings on a trip the quickest is definitly[sic] a nang (nitrous oxide bulb) while listening to REALLY intense music
  1996 March 5, Justin O'Brien, “how long before you peak on acid?”, in alt.drugs (Usenet)
  "helicopters" these days refers to those silly hats with propellers on top, which come with a free ounce of smack at any local K-mart. Y'know, next to the nangs (or bulbs - nitrous oxide for whipped cream).
  1998 October 18, “noise” from hello.net.au and start.net.au, “H ?”, in alt.drugs.hard (Usenet)

nang²

/næŋ/

adjective
comparative more nang, superlative most nang
1. (UK, slang, chiefly MLE) excellent; awesome; masterful; deeply satisfying.
  Quotations
  The wings were seriously a peng ting. The chips were nang. Burger was sick – the assembly was on point. The fillet was a serious ting – the thickness was there. Bossman did well.
  2016 December 9, Adam Boult, quoting Elijah Quashie, “These brilliant videos about London's takeaway chicken shops are a YouTube hit”, in The Daily Telegraph‎