- One that excavates, especially a backhoe.挖掘者，挖土机：挖掘的人或装置，尤指反向铲挖土机
- double entry
- double-faced
- double fault
- double feature
- double fertilization
- double figure
- double flat
- double genitive
- double Gloucester
- double-header
- double helix
- double-hung window
- double indemnity
- double jeopardy
- double-jointed
- double knit
- double negative
- double-park
- double play
- double pneumonia
- double possessive
- double-quick
- doubler
- double reed
- double refraction