a large-scale departure of people from some place, the process of mass emigration;
e.g. There was an exodus of refugees from the war-stricken area.
(noun)
the second book of canonical Christian and Jewish scripture, which is mainly narrative in nature, or the Israelites' departure from Egypt as described in the book (used as "the Exodus" in both cases);
e.g. They held a festival in observance of the Exodus.