A flat slab of stone used as a paving material.(noun)
An evenly layered sedimentary rock that can be split into paving stones.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "flagstone" in a sentence
"I followed it until it passed through a natural bottleneck, then improvised a deadfall trap by prying a flagstone from the ground, which was not quite frozen, and whittling a trigger from dead sticks."
"Laja comes in three common types: Laja de Sous is a local flagstone which is the least expensive but rather thin at times."
"The concrete grinding on the adult pool is complete and they appear to be laying some kind of flagstone down; I only saw one guy doing over the last 4 days, so unless he gets some help, hard to see how this will be complete by month's end."