12(n = noun.quantity) dozen, twelve, xii - the cardinal number that is the sum of eleven and one;
is a kind of large integer
has particulars: boxcars
12(s = adj.all) dozen, twelve, xii - denoting a quantity consisting of 12 items or units;
denoting a quantity consisting of 12 items or units; -- representing the number twelve as Arabic numerals [WordNet 1.5]