Refers to a barber or a barbershop, typically a Western-style establishment. In Japan, it often implies a shop that provides haircuts and shaves, distinct from a 美容院 (beauty salon).
I got my hair cut at the neighborhood barbershop.
彼はバーバーになるために専門学校に通っている。
He is attending a vocational school to become a barber.
I got my hair cut at the barbershop.
I go to the barbershop once a month.