river boulder

1. 1.

   a boulder that has been carried by a river to a place remote from its place of origin

   Broaderboulder

Questions about river boulder

What does river boulder mean?

river boulder means "a boulder that has been carried by a river to a place remote from its place of origin".

Is river boulder a common word?

river boulder is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.