I.out [美 aʊt, 英 aʊt]副out often appears as the second element of certain verb structures in English (come out, keep out, knock out, etc). For translations, see the relevant verb entry (come, keep, knock, etc).
That night, with the $6 million target fast approaching and the church now empty of gadgets, the criminals are puzzled to hear the bells ring out across the grounds.