0 an area of water surrounded on all sides by land -- lac [ masculine ]
They went swimming in the lake. Ils sont allés nager dans le lac.
Lake Ontario le lac Ontario
There is enough mercury in a single thermometer to contaminate fish in a twenty-hectare lake.
We can improve many things, but we cannot turn a lake into an ocean.
Bathers are entitled to clarity, and what are they to make of a lake that contains bathing water of ‘sufficient’ quality?
Peipsi is a border lake whose situation is very specific, it is not an internal body of water.