/nuyn"teen"/ , n.
1. a cardinal number, ten plus nine.
2. a symbol for this number, as 19 or XIX.
3. a set of this many persons or things.
4. talk nineteen to the dozen , to talk very rapidly or vehemently: Whenever I'm excited I talk nineteen to the dozen.
adj.
5. amounting to nineteen in number.
[ bef. 1000; ME nintene, OE nigontyne. See NINE, -TEEN ]