pigeon (plural pigeons) One of several birds of the family Columbidae, which consists of more than 300 species. A person who is a target or victim of a confidence game. Synonyms (bird): columbid , columbiform (Columbiformes), culver, dove (person who is a target or victim of a confidence game): dupe, fish, mark, mug, sucker, rube, stiff
The NIIN is the invariable part of the NSN, and it remains associated with the item of supply concept throughout its life cycle. However, the NSC may change if there is a change to the classification structure. NSNs are usually assigned to items that are needed on a recurring basis.
Niacin is a form of vitamin B3. It is found in foods such as yeast, meat, fish, milk, eggs, green vegetables, and cereal grains. Niacin is also produced in the body from tryptophan, which is found in protein-containing food. When taken as a supplement, niacin is often found in combination with other B vitamins. Do not confuse niacin with niacinamide, inositol niacinamide, nicotinate (inositol hexaniacinate), or tryptophan.