DCHP-1 Online
plank boat Hist. 
a rude, flat-bottomed boat made of rough boards.
- 1958 Rafts, canoes, plank boats and paddle-wheelers plied the only route—the Yukon River and its tributaries.
- 1958 Rafts, canoes, plank boats and paddle-wheelers plied the only route—the Yukon River and its tributaries.