To give an unofficial name or nickname to someone or something. The media dubbed him the 'King of Pop'.
To provide a film or television program with a soundtrack in a different language from the original. The movie was dubbed into Spanish for the Latin American audience.
To make a new recording of a sound or music over an existing one. The producer decided to dub the vocals to improve the sound quality.
To confer knighthood or an honorary title upon (someone) with the ceremonial tap of a sword. The monarch formally dubbed him a knight for his service.