Psephite

Psephite (psephos, pebble) is either a sediment or sedimentary rock composed of fragments that are coarser than sand and which are enclosed in a matrix that varies in kind and amount. It is equivalent to a rudite. Shingle, gravel, breccia, and especially conglomerate, would all be considered psephites. It is equivalent to the Latin-derived term ru...
Found on http://en.wikipedia.org/wiki/Psephite

psephite

psephite, psephitic A conglomerate composed of pebbles or small rounded stones.
Found on http://www.wordinfo.info/words/index/info/view_unit/1771/
No exact match found