slump/slʌmp; slʌmp/ v [I] 1 to suddenly go down in amount, price, or value 〔数量、价格或价值〕骤降，暴跌: Car sales have slumped recently. 近来汽车销量骤降。 2 be slumped to be sitting with your body bent forwards, as if you were unconscious 〔有如失去意识时〕瘫坐，趴坐: He was found slumped over the steering wheel of his car. 他被人发现趴倒在自己汽车的方向盘上。