An individual who has eliminated the 'fetters' by working through the Eightfold Path and who has realised Nirvana (Pali Nibbana). The Theravada ideal. Some translate the word into English as 'saint' but there is no absolutely accurate translation.
The Holy One. Through the extinction of all cankers he reaches already in this very life the deliverance of mind, the deliverance through wisdom, which is free from cankers and which he himself has understood and realized.