A2[I]to suddenly go down onto the ground or towards the ground without intending to or by accident: The path's very steep, so be careful you don't fall.He fell badly and broke his leg.Athletes have to learn how to fall without hurting themselves.She fell under a bus and was killed instantly.The horse fell at the first fence.I fell down the stairs and injured my back.She had fallen, it appeared, from a great height.The water's deep here, so don't fall in!He fell into the river and drowned.If you fell off the roof, you'd kill yourself.He was leaning out of the window and fell out.She fell five metres to the bottom of the ravine.He fell to his death climbing the Matterhorn.Falling and droppingMoving downwardsfall flat on your faceinformal›to fall and land with your face down: Poor Kathy fell flat on her face in the mud.Falling and droppingMoving downwards