birthday buddy

English

From birthday ‎ buddy.

birthday buddy (plural birthday buddies)

(colloquial) A person who shares the same birthday as another person.
- 2011, Sandra Harnisch-Lacey, Steve Stickley, People Like Us: Life with Rob Lacey, Author of The Word on the Street‎^[1], Grand Rapids, Michigan: Zondervan, →ISBN, page 110:
  Our lovely son had made his appearance, sharing a birthday with French playright Molière, Welsh actor and musician Ivor Novello and civil-rights campaigner Martin Luther King Jr. Not a bad pedigree of creative and inspirational birthday buddies. Oh, yes, Google also informs me that the online resource Wikipedia was launched on the very same day as Lukas.
- 2018, David Darling, Agnijo Banerjee, Weird Math: A Teenage Genius and His Teacher Reveal the Strange Connections Between Math and Everyday Life‎^[2], New York City: Basic Books, →ISBN, page 48:
  In other words, the question is not what are the odds of a particular pair of people sharing a birthday but of any pair of people, from all the different possible pairings, being birthday buddies.