river boulder


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Noun1.river boulder - a boulder that has been carried by a river to a place remote from its place of originriver boulder - a boulder that has been carried by a river to a place remote from its place of origin
boulder, bowlder - a large smooth mass of rock detached from its place of origin
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the medians will be improved with a variety of landscape rock, river boulders and drought-tolerant plants.
The saint turned the alligator into stone, and this alligator-shaped boulder became a familiar landmark in a river on the eastern part of Cebu until 1866, when the Spanish used the river boulders for the construction of public buildings.
The group then added five river boulders, representing the five years of conflict and the tombstones of soldiers.