egress
Concise Oxford English Dictionary © 2008 Oxford University Press:
egress /ˈiːgrɛs/
▶noun formal the action of going out of or leaving a place.
■ a way out.
– derivatives
egression noun.
egression noun.
– origin C16: from L. egress-, egredi ‘go out’.
'egress' also found in these Oxford entries:

