[ burth-nahyt ]
/ ˈbɜrθˌnaɪt /


the night of a person's birth, especially a birthday celebration for royalty.
the anniversary of such a date.
the celebration of a royal birthday.

Origin of birthnight

First recorded in 1620–30; birth + night Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for birthnight