dirt/dɝt; dɜːt/n [U] 1 a substance such as dust or mud that makes things dirty 灰尘﹔尘土﹔污垢: His hands were covered in dirt . 他双手满是污垢。2 earth or soil 泥土﹐沙土: He left them lying in the dirt. 他就让它们在泥土里放着。dirt track/road (=one with a surface of soil and small stones) 土路﹐泥路3 informal secret information about someone's life, that would harm them if other people knew about it【非正式】丑闻﹐见不得光的隐私: +on The papers were trying to dig up the dirt (=find harmful information) on the President. 报界在想方设法挖出这位总统的丑闻。