Bowlder
Bowl´der
| n. | 1. | |||||||
| 1. | A large stone, worn smooth or rounded by the action of water; a large pebble. | |||||||
| 2. | (Geol.) A mass of any rock, whether rounded or not, that has been transported by natural agencies from its native bed. See Drift.
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| Noun | 1. |  bowlder - a large smooth mass of rock detached from its place of originSynonyms: boulder |