In Jainism, "Antim Rajashri" refers to the last emperor or king who accepts Jain teachings and renounces worldly life. The term "Antim" means "last," and "Rajashri" is a respectful term for a king or emperor. According to Jain tradition, the most commonly referred "Antim Rajashri" is King Shrenik (also known as Bimbisara) or King Samprati, but the most widely recognized is King Bharat, the eldest son of Bhagwan Rishabhanatha (the first Tirthankara), who renounced his kingdom.

In the context of Jain cosmology and history, the concept of the "last king" is symbolic of the cyclical nature of time and the inevitable decline of righteousness (dharma) in each era, after which true spiritual values are revived by Tirthankaras.

If you are referring to a specific Jain text or story, please provide more context, and I can elaborate based on Jain scriptures and tradition.