|Also called: niacin a vitamin of the B complex that occurs in milk, liver, yeast, etc. Lack of it in the diet leads to the disease pellagra. Formula: (C5H4N)COOH|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
nicotinic acid n.