With abstraction as the hinge, Duchamp opened a trapdoor at the bottom of Western thought and feeling.

NEWYORKER: Shapes of Things

Mr Kamprad left a trapdoor for getting funds out of the business, even if its ownership and control cannot change.

ECONOMIST: IKEA

On Friday Collins helped Toulon ensured their place in the French top flight next season by pushing pushing fellow relegation strugglers Dax through the trapdoor with a 22-12 win.

BBC: Ospreys sign ex-All Black Collins

About the size of a dollar bill, the mud covered the carpet and spanned the crack of the trapdoor that led down into the three-foot-high crawl space beneath the house.

NPR: Excerpt: 'Killer Weekend'