someone who stands in front of a show (as at a carnival) and gives a loud colorful sales talk to potential customers
"The barker stood outside the tent, shouting about the magic tricks to draw crowds into the fair."
Someone or something who barks.
"The foreman hired a barker to strip the precious bark from the young cinchona trees before they could flower."
A person who removes needed or valuable tree bark, as on a cinnamon or cinchona plantation.
In plain English: A barker is someone who talks loudly and annoyingly to get attention.
"The barker dog sat by the gate and barked whenever someone approached the fence."
Usage: Use this term to describe either a laborer stripping bark from trees like cinnamon plants or any animal that makes the sharp vocalization known as a bark. Avoid confusing it with "bark" itself, which refers only to the outer layer of wood or the sound without specifying who or what produces it.
A English surname, from occupations​.
"The barker family has lived in that house for three generations, keeping their ancestral surname alive."
The word barker comes from Middle English and originally meant a dog that makes the bark sound. It entered modern usage by combining the root for the specific noise dogs make with a suffix indicating one who performs an action.