A dugout or dugout canoe is a boat made from a hollowed tree trunk. Other names for this type of boat are logboat and monoxylon. Monoxylon (μονόξυλον) (pl: monoxyla) is Greek -- mono- (single) + ξύλον xylon (tree) -- and is mostly used in classic Greek texts. In Germany they are called einbaum ("one tree" in English)). Some, but not all, pirogues are also constructed in this manner.
Dugouts are the oldest boats archaeologists have found, dating back about eight thousand years. This is probably because they are made of massive pieces of wood, which tend to preserve better than, e.g., bark canoes. Einbaum dug-out boat finds in Germany date back to the Stone Age. Along with bark canoe and hide kayak, dugout boats were also used by indigenous peoples of the Americas.