This is from English.
In most English-speaking countries, a barker is a person who stands at the entrance to a show and tries to attract people to it.
In the Philippines specifically, a barker is the person who calls for passengers to ride public transporation, like buses and jeepneys. They often shout out the destination of each bus or jeepney.
KAHULUGAN SA TAGALOG
bárker: tao na tagatawag ng pasahero sa paradahan ng sasakyang publiko
