a detached and rounded or worn rock, especially a large one.
a city in N Colorado.
Contemporary Examples

New Questions in JonBenet’s Murder Christine Pelisek October 3, 2010
The Call Never Came Michael D. Brown, Ted Schwarz August 27, 2010
New Clues in JonBenet Ramsey Murder Carol McKinley July 17, 2012
Channing Tatum and Jonah Hill on ‘22 Jump Street,’ Penis Kissing, and Julie Andrews’s Boobs Kevin Fallon June 9, 2014
Right Decision, Wrong Reason Paul Campos April 3, 2009

Historical Examples

The Cross-Cut Courtney Ryley Cooper
The World Beyond Raymond King Cummings
With Our Army in Palestine Antony Bluett
Loot of the Void Edwin K. Sloat
The Dueling Machine Benjamin William Bova

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


Read Also:

  • Boulder-canyon

    a canyon of the Colorado River between Arizona and Nevada, above Boulder Dam.

  • Boulder-clay

    a glacial deposit consisting chiefly of unstratified clay with embedded boulders. Historical Examples Fragments of Earth Lore James Geikie The Cruise of the Betsey Hugh Miller Prehistoric Man W. L. H. Duckworth The Cruise of the Betsey Hugh Miller Fragments of Earth Lore James Geikie Hugh Miller William Keith Leask The Cruise of the Betsey […]

  • Boulder-dam

    a dam on the Colorado River, on the boundary between SE Nevada and NW Arizona. 726 feet (221 meters) high; 1244 feet (379 meters) long. noun the former name (1933–47) of Hoover Dam

  • Boulder-raspberry

    Rocky Mountain flowering raspberry. a shrub, Rubus deliciosus, of Colorado, having large white flowers and purple fruit.

Disclaimer: Boulder definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.