Angelus

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A devotional prayer at morning, noon, and night to commemorate the Annunciation.
• noun A bell rung as a call to recite this prayer.

from The Century Dictionary.

• noun In the Roman Catholic Church: A devotion in memory of the annunciation to the Virgin Mary, by the angel Gabriel, of the incarnation of the Son of God.

from the GNU version of the Collaborative International Dictionary of English.

• noun A form of devotion in which three Ave Marias are repeated. It is said at morning, noon, and evening, at the sound of a bell.
• noun The Angelus bell.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun A male given name, a rare variant of Angelo.
• noun A Christian devotion in memory of the Incarnation (from its incipit, "Angelus Domini nuntiavit Mariæ": "the Angel of the Lord declared unto Mary").
• noun The bell rung as a call to prayer during the Angelus service.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a prayer said 3 times a day by Roman Catholics in memory of the Annunciation
• noun the sound of a bell rung in Roman Catholic churches to announce the time when the Angelus should be recited