Definitions
1.AdjectivePertaining to or composed of nitre; having the properties of nitre, bitter. .mw-parser-output .defdate{font-size:smaller}
2.AdjectiveOf, relating to, or derived from nitrogen, especially in which the valence of the nitrogen is lower than that of a corresponding nitric species.
3.AdjectiveOf or relating to nitrous acid or its derivatives.
4.AdjectiveHaving a sharp odor like ammonia or nitric acid.
5.NounNitrous oxide.
6.NounThe system in some racing vehicles which pumps nitrous oxide into the engine to improve performance.