[, ]an accident in which two vehicles crash into each other and there is damage or injury碰撞（或互撞）事故◆The vehicle is insured for collision damage.车辆投保碰撞险。●be on a colˈlision course (with sb/sth)to be in a situation which is almost certain to cause a disagreement（与某人或某事物）几乎导致冲突◆The government is on a collision course with farmers over subsidies.政府和农民在补贴问题上差点发生争执。