What is "nirala"

Nirala, real name Syed Muzaffar Husain Zaidi was a Pakistani comedian and film actor. He only appeared in Urdu films made in Pakistan. His first film was Aur bhi gham hain (1960). His last film was Choroan Ka Badshah, which was released in 1988, three years after his death in 1985. His most successful film was Armaan in 1966, in which he played a supporting role with Waheed Murad.