A house in the South with only one room, small and simple enough that you could shoot a shotgun in one door and out the other. (Improvement on previous definition)
After Katrina, people who had real homes are building shotgun houses because the insurance companies are screwing them over.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.