A dollhouse was a miniature model of a dwelling where dolls were placed.
At some point in Trip Tucker's childhood, he put a garden snake in his sister Lizzie's dollhouse. The mimetic simbiot Sim recalled this as though it was his own memory in 2153. (ENT: "Similitude")
In 2373, Miles O'Brien made his daughter Molly a dollhouse for her birthday. He found it a simpler task than making the miniature furniture. (DS9: "Children of Time")
In 2374, Chester slept on the roof of the dollhouse when a feral Molly looked around her room. (DS9: "Time's Orphan")