Read more here.
According to yourdictionary.com
blouse (blo̵us, blo̵uz)
- a loose, smocklike outer garment of varying length, traditionally worn by certain European peasants and workmen
- a loose garment similar to a shirt, worn by women and children
- the coat or jacket of a service uniform or dress uniform of the armed forces
- a sailor's jumper
But according to simplicity.com and butterick.com, they are called tops ! Now, these are two great sites to get inspired for my next blouse..top pattern!