Thayer's Greek Lexicon

 1. one who sweeps and cleans a temple
2. one who has charge of a temple, to keep and adorn it, a sacristan
3. the worshipper of a deity
  1) word appears from coins still extant, it was an honourary
title [temple-keeper or temple-warden] of certain cities,
esp. in Asia Minor, or in which some special worship of some
deity or even some deified human ruler had been established;
used of Ephesus