What is happy birfday meaning?

The phrase "happy birthday" is a customary expression used to congratulate someone on their birthday. The word "birthday" refers to the anniversary of the birth of a person, usually marked with celebrations, gifts, and well-wishes from friends and family. The expression "happy birthday" signifies the sender's wish for the recipient to have a joyous and happy celebration of their special day. This phrase is commonly used in various cultures and languages all over the world, making it a universal way of expressing birthday greetings and celebrating the life of a loved one.