The Parnahyba forms the eastern boundary of Maranho, but it has one large tributary, the Balsas, entirely within the state.
The wider and smoother rivers were crossed on 'Balsas,' or rafts with sails.
At length the Spaniards embarked in twenty Balsas, and came in sight of the native squadron.
Their boats or Balsas were looked upon as ingenious contrivances.
It was market day, and the Balsas were carrying the peasants homeward.
The sun was as hot as upon the llanos along the river Balsas in Michoacan.
But the Balsas are the most original, and, therefore, the most attractive sight.
We built a fleet of Balsas with reeds and blown-out sheepskins, and followed him.
Here, were already several pack trains, some from the mines, one going on beyond the Balsas River into Guerrero.
The rafts, or Balsas, referred to, were made by tying together a large number of reeds.
South American tree, 1866, apparently from Spanish balsa "float," originally the name of rafts used on the Pacific coast of Latin America (1777). The wood is very light.