Search Result for "bowlder": 
Wordnet 3.0

NOUN (1)

1. a large smooth mass of rock detached from its place of origin;
[syn: boulder, bowlder]

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2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

bowlder n 1: a large smooth mass of rock detached from its place of origin [syn: boulder, bowlder]