a person who calls out to attract customers, especially at a carnival or fair; a dog that barks frequently
from 'bark' (from Old English 'beorcan' to bark) + '-er' suffix, originally referring to dogs, extended to humans who 'bark' out advertisements
Carnival barkers were the original street marketers, using their voices like human megaphones to lure people into sideshows. They had to be part salesperson, part entertainer, and part con artist!
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