The act of entering.
Permission to enter.
All ingress was prohibited.
A door or other means of entering.
The entrance of the Moon into the shadow of the Earth in eclipses, or the Sun's entrance into a sign, etc.
To intrude or insert oneself
To enter (a specified location or area)
(of a planet) To enter into a zodiacal sign
To manifest or cause to be manifested in the temporal world; to effect ingression