dirt/dɝt; dɜːt/n [U] 1 a substance such as dust or mud that makes things dirty 灰塵﹔塵土﹔污垢: His hands were covered in dirt . 他雙手滿是污垢。2 earth or soil 泥土﹐沙土: He left them lying in the dirt. 他就讓它們在泥土裏放着。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】醜聞﹐見不得光的隐私: +on The papers were trying to dig up the dirt (=find harmful information) on the President. 報界在想方設法挖出這位總統的醜聞。