What is "vallavan"

Vallavan (English: Expert) is a 2006 Tamil romantic thriller film written and directed by Silambarasan, starring himself in the title role along with Nayantara, Reema Sen and Sandhya whilst Santhanam, Premji Amaren, Sathyan and S. Ve. Shekhar play supporting roles. The dialogues are written by Balakumaran. The film's score and soundtrack are composed by Yuvan Shankar Raja. The film, loosely based on Hollywood films The Notebook (2004) and Swimfan (2002), was released on 13 October 2006 and became a hit after receiving a grand opening. The film was later dubbed into Telugu and released as Vallabha.