n. A sedimentary rock produced by the consolidation and compaction of sand, cemented with clay etc.
the GNU version of the Collaborative International Dictionary of English
n. A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand.
The Century Dictionary and Cyclopedia
n. A rock formed by the consolidation of Sand.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
Word Usage
"The last and most recent of the three groups was the Huastecas with their rich work carved in sandstone and their temple murals in black, ocher, brown, red and white and decorated with sculptures of humans, birds, and serpents."