References in vintage literature ? I gave the heap a shove above the lip in the entrance. The next moment there arrived up from down below a howl of rage. encroachment, intrusion, invasion - any entry into a place not Beforehand occupied; "an invasion of travelers"; "an invasion of locusts" https://entrancemats90011.blogdal.com/38362184/entrance-mats-can-be-fun-for-anyone