Origabhakthudu (saluting devotee).—A class of mendicants, who are said to beg only from Perikes.
Oriya.—Oriya, or Uriya, is a general term for those who speak the Oriya language. At times of census, it has been recorded as a sub-division of various castes, e.g., Sōndi and Dhōbi.
Oruganti.—A sub-division of Kāpu and Mutrācha.
Orunūl (one string).—A sub-division of Mārāns, whose widows do not remarry.
Oshtama.—A corrupt form of the word Vaishnava, applied to Sātānis, who are called by illiterate folk Oishnamāru or Oshtamāru.
Osta.—Recorded, in the Travancore Census Report, 1901, as the name of a caste of barbers for Muhammadans.
Otattu (tile-makers).—An occupational name for Nāyars, who tile or thatch temples and Brāhman houses.
Ottaisekkan.—The name, indicating those who work their oil-mill with a single bullock, of a sub-division of Vāniyan.
Ottikunda (empty pot).—An exogamous sept of Kamma.