Twelve eggs or roses or cups of yogurt or loaves or kisses is a dozen.
Twelve cents is a dime and two pennies a nickel and seven pennies two nickels and two pennies but there is no twelve-cent coin if there was, what would it be called?
There are twelve months in one year
There were twelve tribes of Israel twelve apostles twelve days of Christmas
and in my high school orchestra twelve violinists bending and swaying to music shining from their quivering strings
There are twelve minutes in one-fifth of an hour, (an absurd amount of time used by no one, but quite tidy --why donβt we divide our hours this way?)
Twelve squared: one gross. an obsolete measurement of days gone by --when there were clapboard general stores that sold pickles.