What is a houseboat?

Houseboat
   A houseboat is a combination of a boat and a house. Taking a hint from the boat dwellings of eastern Asia, or possibly from the canal boat, the English originated the pleasure houseboat during the nineteenth century. It is a broad, commodious, comfortable affair, consisting of one or more rooms on a flat boat of shallow draft. It is quite popular on the Thames for families or small pleasure parties. The houseboat has been introduced into America. Long Island Sound and the Hudson, the St. Lawrence, the Ohio, the Mississippi, and other American rivers have their fleets of houseboats, which are brought into requisition during the summer months.