n (grammar) A lexeme; a basic, grammatically indivisible unit of a language such as a keyword, operator or identifier.
n (medical) A characteristic sign of a disease or of a bodily disorder, a symptom; a sign of a bodily condition, recovery, or health.
n (medical)(obsolete) A livid spot upon the body, indicating, or supposed to indicate, the approach of death.
n (printing) Ten and a half quires, or, commonly, 250 sheets, of paper printed on both sides; also, in some cases, the same number of sheets printed on one side, or half the number printed on both sides.
n (mining) A bit of leather having a peculiar mark designating a particular miner. Each hewer sends one of these with each corf or tub he has hewn.
n (mining) A thin bed of coal indicating the existence of a thicker seam at no great distance.
n (weaving) In a loom, a colored signal to show the weaver which shuttle to use.