- luft rackle
- lug
- lug brick
- luggage compartment
- luggage elevator
- luggage platform
- luggage room
- luggage van
- lukewarm weather
- lumber
- lumber kiln
- lumber shrinkage
- lumber truck
- luminance contrast
- luminance difference
- luminance meter
- luminance threshold
- luminescent material
- luminescent radiation
- luminous buoy
- luminous ceiling
- luminous efficiency
- luminous environment
- luminous float
- luminous flux
- luminous paint
- luminous pencil
- luminous rays
- lump
- lump hammer
- lump sum
- lumping
- lumpsum price
- lumpy structure
- luster pant
- lustreless
- lustreless fracture
- lute
- luxuriant
- luxurious
- luxury
- lying panel
- lying wall
- macadam
- macadam facing
- macadam foundation
- macadam roller
- macadamize
- maceration
- machine assembly
- machine drill
- machine duct
- machine hour
- machine independence
- machine knife
- machine mixing
- machine rammer
- machine reamer
- machine trowelling
- macro crack
- madrier
- magenta
- magma
- magnesia
- magnesia cement
- magnesian chalk
- magnesite brick
- magnesite cement
- magnesite concrete
- magnesite flooring
- Magnesium alloy
- magnesium cement
- magnesium lime
- magnesium sulfate
- magnesium sulphate
- magnetic blower
- magnetic brake
- magnetic catch
- magnetic compass
- magnetic crane
- magnetic force
- magnetic lock
- magnetic north
- magnetic pole
- magnetic spectrum
- mahogany
- main bridge
- main busway
- main circuit
- main collector
- main couple
- main dam
- main diagonal
- main dyke
- main flue
- main girder
- main highway
- main journal
- main load
- main material