Both. Les is the plural form of le (masculin) or la (feminin)
le bain means 'the bath' in French.
The cast of Le bain - 2006 includes: Patrice Gingras
The cast of Le bain - 2012 includes: Guilhem Loupiac
le Canada
you say tu le masculin ou le femin
le temps (masc.)
Le maillot de bain - 2013 is rated/received certificates of: Sweden:Btl
The bath
bath
le bain
'la' is the feminine form of 'the', the masculine form is 'le' and the plural form is 'les'