Birthday is a special day that marks the ANNIVERSARY of one's birth. It is usually celebrated with friends and family, and is often marked by giving gifts, having a party, or eating CAKE. The crossword solutions for the term 'birthday' include AGE (3 letters), BELATED (7 letters), SKIN (4 letters), ANNIVERSARY (11 letters), and CAKE (4 letters). AGE refers to the number of years since one's birth, BELATED is used to describe something that is late or overdue, SKIN is the outer layer of the body, ANNIVERSARY is the yearly celebration of an event, and CAKE is a sweet dessert often served at birthday parties.