a thief who climbs over walls or breaks through them; by extension, a hypocrite or someone whose outward appearance hides a corrupt nature

to watch for a moment of weakness or a favorable opportunity in order to take action (often against an adversary)

humble dwelling of a poor family; literally a gate made of brambles and a window like a hole in the wall

a poverty-stricken home; literally, a wicker gate and a hole in the wall for a door