hard labour 
noun [mass noun]
Heavy manual work as a punishment: he was sentenced to eighteen months' imprisonment with hard labour...
- He was sentenced to fifteen years' imprisonment with hard labour and ten strokes of the tamarind birch.
- He was sentenced to life imprisonment with hard labour.
- If found guilty they should face the death penalty, in those countries which have it, or life imprisonment with hard labour elsewhere.
- marsileaceous
- marsilia
- marsiliaceous
- Marsilid
- marsipobranch
- Marsokhod
- Mars Pathfinder
- Marsquake
- Marston Moor, Battle of
- marsupial
- marsupial bone
- marsupial cat
- marsupial frog
- Marsupialia
- marsupialise
- marsupialization
- marsupialize
- marsupial lion
- marsupial mole
- marsupial mouse
- marsupial rat
- marsupial wolf
- marsupium
- Marsyas
- mart