un pull
Why are you wearing a sweater?
Pourquoi portes-tu un pull ?
You'd better wear a sweater under your jacket.
Tu ferais mieux de mettre un pull sous ta veste.
I'm wearing a sweater because I feel cold.
Je porte un pull parce que j’ai froid.
She bought him a sweater, but he hated the color.
Elle lui a acheté un pull, mais il détestait la couleur.