[ noun ] a Buddhist who has attained nirvana <noun.person>
Arhat \Arhat\ n. 1. 1 a Buddhist who has attained nirvana.
Syn: Arhant, lohan. [WordNet 1.5]
Sarah is the "S." of John Updike's latest novel (Knopf, 279 pages, $17.95), and he leaves no doubt where he is coming from (as one of the Arhat subgurus might have put it).