un sac is a bag in French.
Un sac à dos noir is a black backpack in French.
c'est un sac à dos means 'this is a backpack' in French.
It is a green bag.
a bag is 'un sac' in French.
Did you mean "purse"? A purse is 'un sac' (masc). My purse is 'mon sac'.
sac à dos nm pack (backpack)
un cul-de-sac (literallly "bag's end") is a dead end street or situation in French.
Un sac means a bag
Un sac (masc.) means a bag in English.
A handbag is 'un sac à main" in French.
bag is : un sac
A bag is 'un sac' or 'un sachet' (for the smaller ones) in French.