1. boulderGeology
2. BoulderIn geology, a boulder is a rock with grain size of usually no less than 256 mm (10 inches) diameter. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks or stones. The word boulder is short for boulder stone, from Middle English bulderston or Swedish bullersten.
Read “Boulder” on English Wikipedia
Read “巨礫” on Japanese Wikipedia
Read “Boulder” on DBpedia
Read “Boulder” on English Wikipedia
Read “巨礫” on Japanese Wikipedia
Read “Boulder” on DBpedia
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