References in classic literature ? I gave the heap a shove over the lip of the entrance. Another instant there arrived up from under a howl of rage. encroachment, intrusion, invasion - any entry into a place not Beforehand occupied; "an invasion of visitors"; "an invasion of locusts" hold - https://entrance-mats78900.ssnblog.com/36548124/a-secret-weapon-for-entrance-mats