from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A large rounded mass of rock lying on the surface of the ground or embedded in the soil.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large piece of stone that can theoretically be moved if enough force is applied.
- n. A particle greater than 256 mm in diameter, following the Wentworth scale
- v. To engage in bouldering
from the GNU version of the Collaborative International Dictionary of English
- n. Same as bowlder.
from The Century Dictionary and Cyclopedia
- n. A loose rock, or one which has been torn from its native bed and transported to some distance.
- To wear smooth, as an emery-wheel, by abrading with small flint pebbles. Also spelled bowlder.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a large smooth mass of rock detached from its place of origin
- n. a town in north central Colorado; Rocky Mountains resort center and university town
Middle English bulder, of Scandinavian origin; see bhel-2 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English bulder, possibly from Swedish bullersten ("noisy stone"), or possibly from Dutch bolder (Wiktionary)