It is the plural form of the definite articles (le, la, English "the"). There is only one form, no gender agreement for plural definite articles (unlike Spanish).
Les trains means "the trains" in English.
les desserts means desserts in English.
"pendre les vêtements" means "to hang the clothes" in English.
Do you mean 'les portes'? That means 'the doors' (:
"les petits" means "small ones", "kids".
Les trains means "the trains" in English.
"Les pics" means "the peaks" (as in mountain peaks) in English.
les fauteuils means chairs in English.
dans les quatre means 'in the four' in English.
les desserts means desserts in English.
"pendre les vêtements" means "to hang the clothes" in English.
trouve les objets means "find the objects" in English.
J'aime les voitures et les chevaux means: "I like cars and horses" in English.
It means- Wednesdays
les disparus means 'the vanished' in French.
It means: the salads and the soups.
les amis means 'friends' in French.