banker's dozen



A play on the phrase baker's dozen; it is one less than a dozen as compared to one more.


banker's dozen ‎(plural banker's dozens)

  1. (idiomatic, uncommon) Eleven
  2. (banking, finance, idiomatic) By analogy, a method of lending where the interest is deducted beforehand, archetypally borrowing twelve dollars (owing twelve dollars back, a dozen) but actually receiving only eleven.