- driving rain
- driving side
- driving source
- driving test
- drizzle
- droid
- drop
- drop forging
- drop test
- drop-out
- dropout colours
- dropped side
- drops
- drosometer
- drown
- drum brake
- drum drier
- drum store
- dry agriculture
- dry batch
- dry cell
- dry coal
- dry dressing
- dry farming
- dry felt
- dry filter
- dry friction
- dry heat
- dry hole
- dry kiln
- dry mass
- dry mat
- dry mud
- dry offset
- dry pressing
- dry running
- dry sand
- dry shake
- dry sharpening
- dry spray
- dry stone
- dry topping
- dry wall
- dry well
- dryer
- drying air
- drying apparatus
- drying cabinet
- drying cupboard
- drying furnace
- drying machine
- drying oven
- drying power
- drying room
- drying stove
- drying varnish
- drying-out
- dryness
- dual
- dual constraint
- dual counter
- dual ignition
- dual input
- dual platform
- dual representation
- dual-duct
- dual-level
- dualism
- dub
- dubbed corner
- ducitol
- duck
- duct away
- duct drop
- duct flow
- duct lining
- duct system
- ductile
- ductile iron
- ductility
- ducting
- ductor
- duff
- dug well
- duh
- dulcet
- dumb
- dumb board
- dumb iron
- dummy instruction
- dummy order
- dummy rivet
- dummy shaft
- dump
- dump bailer
- dump bank
- dump diskette
- dump lorry
- drawer
- drawing area