BARKER
NOUNS
1914 — BALLYHOO a ‘barker’s’ speech; publicity in advance of a project; hence, blarney → US
NOUNS, PERSON
1700 — SALESMAN’S DOG a barker, a tout; a person soliciting custom or business, usually boldly or aggressively → obs.
1700 — SPRUIKER a person who shouts to attract customers; one who tries to persuade people to buy something, use a service, etc., often a dishonest or exaggerated way; a tout → obs.
1894 — SPIELER a barker; a voluble speaker
1934 — BARKER a person who ‘barks’ at a cheap shop or show to entice people inside → Amer. dial., chiefly US usage
VERBS
..19C — BARK to call out or ‘spiel ‘ at the entrance of a cheap shop or show to attract customers
1927 — BALLYHOO to commend, urge, or the like, in the manner of a ‘barker’
Lexicophilia 