(an instance of) colliding
accident
Cases of word usage
1) (usually pl) an apparatus for reducing the effect of a collision e.g. on a railway engine (buffer)
2) (the effect caused by) a violent blow or shaking (e.g. caused by a fall, collision or explosion); (the condition caused by) a sudden and very strong feeling of surprise, fear, worry etc (caused by bad news, unusual clothes etc) (shock)
