grou - high
- halter neck top
- halve
- halved joint
- halving
- halving joint
- halving-pitting machine
- halyard
- ham
- ham band
- ham radio
- HAMA
- Hamilton operator
- Hamiltonian
- Hamiltonian function
- hammer
- hammer (energy )source
- hammer (energy )source
- hammer arrangement of excavator
- hammer beam
- hammer block
- hammer car
- hammer crusher
- hammer debarker
- hammer driftbolt
- hammer drill
- hammer forging
- hammer grinder
- hammer head
- hammer hog
- hammer mill
- hammer point
- hammer station
- hammer test of grease
- hammer welding
- hammer-dressed rustic ashlar
- hammer-headed chisel
- hammer-mill grate
- hammer-type seismograph
- hammered surface
- hammerhead crane