This is the 3953rd most frequent French word.
bain
"Bath."
In this sentence, 'bain' refers to a bath, indicating an instance of bathing in the context of personal hygiene.
Je prends un bain chaque soir.
I take a bath every evening.
Here, 'bains' refers to thermal baths, implying public or spa facilities for bathing and relaxation.
Elle s'est détendue dans les bains thermaux.
She relaxed in the thermal baths.
In this context, 'bain de lumière' is a figurative expression meaning 'light bath,' which refers to an environment filled with light.