baker's dozen

noun2

1. •
   Thirteen; a group of thirteen.

   • A Baker's Dozen, Treize dans la Douzaine. — 1702
2. •
   (slang) A cousin.

   • "Before I agree to help you and your baker's dozen over there …" Rose nodded at Larry. / "It means cousin," Larry said. / "Before I say yes to helping, I would like a low-risk, up-front agreement." — 2015

noun1

1. •
   A solitaire card game, starting with 13 piles of 4 cards each.