Definition of capstone in English:



  • 1A stone fixed on top of something, typically a wall.

    • ‘A capstone is the uppermost stone of a structure in architecture.’
    • ‘In such cases bands, columns, lintels, sills, jambs, quoins, water tables, medallions, capstones, and copings were wrought of the stone quite often repeating the coloration of the stone used in the steps or foundation.’
    • ‘Parallel double rows of eight to twelve much taller Latte pillars topped by separate capstones are all that is left of what must have been huge structures throughout the archipelago.’
    • ‘Wind- and drought-gnarled Torrey pines do a pas de deux with sandstone formations whose knife-edge ridges, deep furrows, and occasional hoodoo-like capstones create a mini Bryce Canyon at the beach.’
    • ‘When we reached the spot they had turned, we could see that a carved capstone had been rolled into place behind them.’
    • ‘And I, the son and grandson of Indiana architects, seize this opportunity to suggest a feature which I hope will be included in the completed structure, words to be chiseled into the capstone over the main entrance.’
    • ‘A 24-inch base material of #2 or #3 stone and 12 inches of ground aggregate capstone were used to provide a quality subgrade.’
    • ‘It looks fine although the wall capstones could do with painting.’
    • ‘To the south, the walls are neat, with angled capstones and two levels of through stones.’
    • ‘The capstone porch railings are made of quarried Indiana limestone, and the quakeproof foundation includes 29-inch thick walls.’
    • ‘‘That's chalcedony,’ Corissa remarked, her eyes focusing on the translucent gray capstones of the wall.’
    1. 1.1Archaeology A large flat stone forming a roof over the chamber of a megalithic tomb.
      • ‘At the centre of this monument are several upright stones, and a great big capstone lying horizontally across the top and resting on mere knife-edge points of three of the standing stones.’
      • ‘The largest block recorded is the capstone of the tomb at Browneshill, County Carlow, Ireland, estimated to weigh 100 tonnes.’
      • ‘The capstone of the third grave had survived, however, and inside lay the fragile remains of a child aged about 9-12.’
      • ‘Imagine an ancient burial site, which has the biggest capstone in Europe yet no one is able to get to it.’
      • ‘Portal tombs are so called from the two large upright stones forming the entrance to the burial chamber; a capstone is set over these and slopes backwards to rest on backstones.’
      • ‘This in turn leads to the much larger trapezoidal burial chamber at a slightly higher level, which has survived with its capstone intact.’
      • ‘The capstone on this Dolmen is considered to be the biggest in the world.’
      • ‘Three pairs of the large stones were topped by lintel stones, but the others were missing the capstones they had once supported, which now lay scattered about the circle, some intact, others broken.’
      • ‘Erected around 3,500 BC, it has the largest capstone in Europe.’
      • ‘As with other portal dolmens, access was through the gap between the side walls and the capstone.’
      • ‘It is easily as large as the Great Pyramid at Giza, but it is white with a golden capstone.’
      • ‘At the same time, a cruciform chamber roofed with large capstones was constructed at the wider, higher end of the enlarged mound.’