angelus
Concise Oxford English Dictionary © 2008 Oxford University Press:
angelus /ˈandʒ(ə)ləs/
▶noun a Roman Catholic devotion commemorating the Incarnation of Jesus and including the Hail Mary.
■ a ringing of bells announcing this.
– origin C17: from the L. phr. Angelus domini ‘the angel of the Lord’, the opening words of the devotion.
'angelus' also found in these Oxford entries:

