References in classic literature ? I gave the heap a shove more than the lip from the entrance. The following minute there arrived up from underneath a howl of rage. encroachment, intrusion, invasion - any entry into an area not Beforehand occupied; "an invasion of travellers"; "an invasion of locusts" https://entrancemats01122.bcbloggers.com/36668645/the-smart-trick-of-entrance-mats-that-nobody-is-discussing