Abhidhana

An (, ) is a kind of dictionary or vocabulary of Sanskrit. Its purpose was to be used as a general guide for lexicography and word choice. Many of these works had been created in India. One of the oldest of them is the "Abhidhana ratna - mala", of Halayudha Bhatta of the 7th century. The Abhidhana Chinta-mani of Hema-chandra, a celebrated Jaina writer of the 13th century, is often mentioned as among the best. 
The sixty-four "kalas" (fine arts and crafts) as mentioned by Ancient Indians include "Abhidhana kosa cando jnana" or the use of lexicography and meters as one of them.