This is the 5447th most frequent French word.
berne
"Berne" refers to a deception or trick.
In this sentence, 'Berne' refers to the capital city of Switzerland, used as a proper noun.
Le drapeau flotte fièrement à Berne.
The flag waves proudly in Bern.
Here, 'berne' is used figuratively to describe a reduced state or condition, similar to half-mast.
Le bateau est en berne à cause de la panne.
The ship is at half-mast due to the breakdown.
In this context, 'en berne' metaphorically describes the lowering or dampening of spirits or enthusiasm.