sea level 
noun
The level of the sea’s surface, used in reckoning the height of geographical features such as hills and as a barometric standard: it is only 500 feet above sea level...Compare with mean sea level.
- The South Pole Observatory was established at the geographical south pole at 2837 m above sea level in 1957 as part of the International Geophysical Year.
- Considering that Amsterdam is situated two meters below sea level, the Dutch have really done a magnificent job of incorporating nature into the function and aesthetics of the city.
- poupée
- pour
- pourable
- pourboire
- pour cold water on
- pour encourager les autres
- pourer
- pourie
- pouring cream
- pouring rights
- pour it on
- pouriture
- pour le sport
- pour oil on troubled waters
- pour-on
- pourparler
- pourparty
- pour passer le temps
- pour point
- pourpoint
- pourpointerie
- pour rire
- pourriture
- pour scorn on
- pour-soi