Nannul
Naṉṉūl (Tamil: நன்னூல்) is a work on Tamil grammar written by a Jain ascetic[1] Pavananthi Munivar around 13th century CE.[2] It is the most significant work on Tamil grammar after Tolkāppiyam.[2] The work credits Western Ganga vassal king Seeya Gangan of Kolar with patronising it.[3][4]
About 20 commentaries have been written on Nannūl up to 19th century CE.[1] Nannūl was divided into five sections: written language, spoken language, semantics, poetic language and rhetorical devices. The latter three sections have been lost, so only the parts on written and spoken language are extant today.[2]
In Tamil, nal means good and nūl means book, so Nannūl means good book.[2]