bowlder
NounSynonyms:
boulder
WordNet 3.0
Noun (1)
- a large smooth mass of rock detached from its place of originSynonyms: boulder
Webster's Dictionary (GCIDE)
Bowlder \Bowl"der\, Boulder \Boul"der\, n. [Cf. Sw. bullra to roar, rattle, Dan. buldre, dial. Sw. bullersteen larger kind of pebbles; perh. akin to E. bellow.] [1913 Webster]
1.A large stone, worn smooth or rounded by the action of water; a large pebble. [1913 Webster]
2.(Geol.) A mass of any rock, whether rounded or not, that has been transported by natural agencies from its native bed. See Drift. [1913 Webster]
Bowlder clay, the unstratified clay deposit of the Glacial or Drift epoch, often containing large numbers of bowlders.
Bowlder wall, a wall constructed of large stones or bowlders. [1913 Webster]