countersunk is countersink's Past Tense

countersink

US 
UK 
  • n.埋头钻;埋头孔
  • v.打埋头孔
  • Web暗钉眼;沉头螺栓;沉孔
Past Tense:countersunk  
v.
1.
打孔装埋(螺钉头),打埋头孔
n.
1.
埋头钻;埋头孔,暗钉眼

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard