half birthday

plural half birthdays · alternative half-birthday

1. The day halfway in between two consecutive birthdays.

   The fete was Mary Beth's half-birthday.

   2004, Ginnie Mesibov, Outer Strength, Inner Strength, page 39

   3 more examples

   You can sing "Happy Half Birthday to You!" or you could try only singing every other word.

   2003, Meg Cox, The Book of New Family Traditions, page 263

   “Your halfbirthday?” I pointed to the plate.

   2009, Philip Done, Close Encounters of the Third-Grade Kind: Thoughts on Teacherhood

   After all, a half-birthday celebration for an adult is OUTRAGEOUS in itself.

   2009, Bill Glazer, Dan Kennedy, Outrageous Advertising That's Outrageously Successful, page 257