References in vintage literature ? I gave the heap a shove over the lip with the entrance. The following moment there came up from down below a howl of rage. encroachment, intrusion, invasion - any entry into an area not Formerly occupied; "an invasion of tourists"; "an invasion of locusts" https://raymondvmaob.blogs100.com/38345185/new-step-by-step-map-for-entrance-mats