n. A rock composed of angular fragments in a matrix that may be of a similar or a different material.
the GNU version of the Collaborative International Dictionary of English
n. A rock composed of angular fragments either of the same mineral or of different minerals, etc., united by a cement, and commonly presenting a variety of colors.
The Century Dictionary and Cyclopedia
n. In geology, a conglomerate in which the fragments, instead of being rounded or water-worn, are angular.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a rudaceous rock consisting of sharp fragments embedded in clay or sand
Word Usage
"It may also be called a breccia, for it is composed of black fragments, larger or smaller, derived from other rocks, whose angular shape indicates that they have not travelled far from the spots where they occur."