What is Barber-shop?
Barber-shop definition and meaning on Dictionary terms:
Also called, especially British, barber’s shop. the place of business of a barber.
the singing of four-part harmony in barbershop style or the music sung in this style.
specializing in the unaccompanied part-singing of popular songs in which four voices move in close, highly chromatic harmony: a barbershop quartet.
characteristic of such part-singing.