rat trap
noun
1
a dilapidated, shoddy building UK, 1838.
2
a fox hole that accommodated two or three Viet Cong who hid and slept there during the day US, 1990.
3
a Japanese person. Rhyming slang for JAP, a pejorative term dating from World War 2 and lingering among veterans of that conflict (especially prisoners of war). Also shortened to 'rat' UK, 1992