pundit

noun3

1. •
   An expert in a particular field, especially as called upon to provide comment or opinion in the media; a commentator, a critic.

   • This week we introduce Jenny Walker, who will be The Observer's expert pundit for the duration of the World Cup. — 2006
2. •
   A learned person in India; someone with knowledge of Sanskrit, philosophy, religion and law; a Hindu scholar.

   • Pundits in black gowns, with spectacles on their noses and undigested wisdom in their insides; bearded headmen of the wards; [...] all these people and more also you might find in the white room. — 1888
3. •
   (historical) A native surveyor in British India, trained to carry out clandestine surveillance beyond British borders.

   • At every hundredth pace the Pundit would automatically slip one bead. Each complete circuit of the rosary thus represented ten thousand paces. — 1990