noun, slang ·Uncommon ·College level

Definitions

Noun

1. 1
   The combined celebration of one's birthday and one's anniversary, especially when the two individual events are near each other in date. informal, neologism
2. 2
   A birthday.

Etymology

Blend of birthday + anniversary.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.