plural of nit-picker

(Australia, dated) Someone, usually a criminal, who keeps watch; a lookout

(uncountable) The chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.

(organic chemistry) The ester of amyl alcohol (pentanol) and nitric acid, C₅H₁₁NO₃, used to control angina and as an antidote to cyanide poisoning.

Informal spelling of night.

Of, pertaining to, or containing, nitrogen.

Nitric acid.

(obsolete) Native sodium carbonate; natron. / (US, inorganic chemistry) A mineral form of potassium nitrate (saltpetre) used in making gunpowder.

(archaic, also figuratively) Full of nits. / (chiefly Britain, slang) Foolish, inane.

(African-American Vernacular, MLE, slang) A dope fiend, a druggie.