exodus

Short definition from Wiktionary

Noun

1. 1
   A sudden departure of a large number of people.

Verb

1. 1
   To depart from a place in a large group.

Proper noun

1. 1
   The departure of the Hebrew slaves from Egypt under the leadership of Moses.
2. 2
   The second of the Books of Moses in the Old Testament of the Bible, the second book in the Torah describing the Exodus.