flatboat - a flatbottom boat for carrying heavy loads (especially on canals)boat - a small vessel for travel on water dredger - a barge or barge-like vessel used for dredging houseboat - a barge that is designed and equipped for use as a dwelling pontoon - (nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge scow - a barge carrying bulk materials in an open hold |