Dirty Dozen

Proper noun

 * 1) Any of certain groups of twelve people.
 * 2)  The twelve rookies who made the  team in 1975.
 * 3) A team of twelve  employees, formed in 1980, who created the first IBM PC in 1981.
 * 4)  The United States' men's basketball team (which consists of twelve players) at the.
 * 5)  and eleven others who carried out his orders.
 * 6)  A one-day road cycling race founded in 1983 (which originally featured twelve hills, but since 1988 has typically featured a baker's dozen of thirteen hills), held annually in Pittsburgh, Pennsylvania.
 * 7)  The twelve most common aircraft problems, resulting from human error, that may lead to accidents etc.
 * 8) The twelve species of fruits and vegetables that are declared the most likely to be contaminated by pesticides over the last year