A hut was a small round house often associated with primitive cultures.
Like Humans, the Mintakans once lived in caves, but changed to huts. In 2366, Jean-Luc Picard discussed the Mintakans' reasons for changing from caves to huts with Nuria, who supposed that they had done so because huts were brighter and drier than caves.. When asked why they once lived in caves when huts were preferable, she guessed that it was because they didn't know how to make a hut. Picard then suggested that once somebody did so, somebody else later improved on the original design, and taught their descendants, and so on. (TNG: "Who Watches The Watchers")