a banker's dozen

a banker's dozen

One less than a dozen, i.e., 11. A play on "a baker's dozen" (13 rather than 12), it refers to lending in which interest is deducted at the time of the loan, therefore yielding less than what the loan actually stipulated. A soccer team has a banker's dozen players on the field at any given time.
See also: dozen
Farlex Dictionary of Idioms.
See also:
  • banker
  • baker's half dozen
  • a baker's dozen
  • baker
  • baker's dozen
  • a long dozen
  • long dozen
  • half a dozen
  • by the dozen
  • by the dozen(s)