The "tooth of the Buddha" refers to a relic believed to be a tooth of Siddhartha Gautama, who became known as the Buddha. This relic is highly revered in Buddhism and is considered a symbol of the Buddha's teachings and presence. The most famous tooth relic is housed in the Temple of the Tooth in Kandy, Sri Lanka. This temple attracts thousands of pilgrims and tourists each year, as it plays a significant role in the religious and cultural life of the country, representing the connection between the Buddha and the community.