boul·der

[bohl-der]
Also, bowlder.


Origin:
1610–20; short for boulder stone; Middle English bulderston < Scandinavian; compare dialectal Swedish bullersten big stone (in a stream), equivalent to buller rumbling noise (< Old Swedish bulder) + sten stone

boul·dered, adjective
boul·der·y, adjective

1. bolder, boulder ; 2. boulder, cobblestone, granule, pebble, rock, stone.
00:10
Boulders is always a great word to know.
So is lollapalooza. Does it mean:
a gadget; dingus; thingumbob.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Dictionary.com Unabridged

Boul·der

[bohl-der]
noun
a city in N Colorado.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To boulders
Collins
World English Dictionary
boulder (ˈbəʊldə) [Click for IPA pronunciation guide]
 
n
1.  a smooth rounded mass of rock that has a diameter greater than 25cm and that has been shaped by erosion and transported by ice or water from its original position
2.  geology a rock fragment with a diameter greater than 256 mm and thus bigger than a cobble
 
[C13: probably of Scandinavian origin; compare Swedish dialect bullersten, from Old Swedish bulder rumbling + stenstone]
 
'bouldery
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

boulder
1670s, variant of M.E. bulder (c.1300), from a Scandinavian source akin to Swed. dial. bullersten "noisy stone" (large stone in a stream, causing water to roar around it), from bullra "to roar" + sten "stone." Or the first element may be from *buller- "round object," from P.Gmc. *bul-, from PIE *bhel-
(2) "to inflate, swell" (see bole).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Close to the end of the valley was a rise of boulders, down which a river
  tumbled.
Not unlike the loose chain-link fences sometimes seen along steep mountain
  roads that collect rolling boulders.
We took lots of pictures and looked at how huge the boulders were that they
  used to build the pyramids.
As you walk through the forest, notice many individual rounded boulders
  scattered everywhere.
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