mibster
n.— «It was only the second time John Leffakis attended the national competition since becoming a mibster, another name for marbles players.» —“Allegheny mibsters seal Wildwood victory with a kiss” by Trudi Gilfillian pressofAtlanticCity.com (New Jersey) June 20, 2008. (source: Double-Tongued Dictionary)
Further reading
In New York and northern New Jersey, a children’s playground slide was once commonly known as sliding pond or sliding pon. The terms reflect the considerable influence of Dutch settlement in that area, the Dutch word baan meaning a “path” and...
Sara in Camden, New Jersey, wants a word for those people who are more than acquaintances, but not quite friends. She calls them friendlies, but wonders if there’s a better term. Fracquaintance, maybe? The Danish band Mew has an album called...