a detached and rounded or worn rock, especially a large one.
- bouldered, adjective
- boul·der·y, adjective
Other definitions for Boulder (2 of 2)
a city in N Colorado.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use boulder in a sentence
In slide rock and in bouldery moraines up as high as thirteen thousand feet, one finds the pika, or cony.The Rocky Mountain Wonderland | Enos A. Mills
The alluvial fans (Rattlesnake Formation) in front of the mountains were built up of bouldery gravels and finer sediments.The Geologic Setting of the John Day Country | Thomas Prence Thayer
British Dictionary definitions for boulder
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
geology a rock fragment with a diameter greater than 256 mm and thus bigger than a cobble
- bouldery, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012