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Le bouchon flotte à la surface de leau.
The cork floats on the surface of the water.
To stay on the surface of a liquid without sinking.
Le bateau flotte calmement sur le lac.
The boat floats calmly on the lake.
To hang loosely or wave in the air, like a flag or clothes.
Son manteau flotte autour de lui.
His coat hangs loose around him.
From Old Norse flota, to float, via Norman French.