サーセン石せきalso: サルセンせきMeanings1nounsarsen stonegeologyA type of sandstone block used in prehistoric monuments, especially Stonehenge. Technical term in geology and archaeology.ストーンヘンジの巨きょ石せきの多おおくはサーセン石せきでできている。Many of the large stones at Stonehenge are made of sarsen stone.