sweater on the rail
n.— «Hustling doesn’t merely involve the players at the table. There was a rogue’s gallery of “stakehorses” (financial backers), “sweaters on the rail” (side bettors) and “nits” (kibitzers). As the gambling spigot has been turned off, the local poolroom—once a civic institution—has almost vanished.» —“Jump the Shark” by L. Jon Wertheim New York Times Nov. 24, 2007. (source: Double-Tongued Dictionary)
Further reading
Old. Elderly. Senior. Why are we so uncomfortable when we talk about reaching a certain point in life? An 82-year-old seeks a more positive term to describe how she feels about her age. And: a linguist helps solve a famous kidnapping case, using the...
A resident of Michigan’s scenic Beaver Island shares the term, boodling, which the locals use to denote the social activity of leisurely wandering the island, often with cold fermented beverages. There have been various proposed etymologies...