wind - zymurgy
- working stroke
- working substance
- working surface
- working thickness
- working upon
- working value
- working voltage
- working weight
- working windward
- workman's train
- workmanship defect
- workpiece
- world coal deposits
- worm
- worm channel
- worm conveyor
- worm feeder
- worm gear
- worm hole
- worm rack
- worm shaft
- worm thread
- worm wheel
- worm's-eye view
- worm-and-sector
- worm-and-sector steering
- worm-gear
- worm-gear drive
- worm-gear driven
- worm-gear-driven
- worm-wheel
- worm-wheel drive
- wormseed
- wormseed oil
- worn-in journal
- worn-out
- worst-case analysis
- worst-case conditions
- worsted ring spinning frame
- wortle
