stone, ston, stoon

& a. [A. S. stán; cogn. with Dut. steen; Icel. steinn; Dan. & Sw.sten; Ger. stein Goth. stains; Ru . stiena a wall; Gr. stia =a stone, a pebblo.] A. A substantive: I. Ordinary Language: 1. Literally: (1) In the same sense as II. 1. (1) Artificial stone : A concreted material used flagstones, tiles, vases, statuary, sewer-pipes, . Many substances have been used for its production. That which has been used on the largest scale, and, until a comparatively recent period, exclusively, was cemented Roman, or, still better, Portland cement, which hardens after being mixed with water. Ordinary concrete and beton are of this cla . Terra-cotta, employed for architectural orpaments, statuary, ., is in the nature of a fine brick. (2) Meteoric stone : [AEROLITE.] (3) Philosopher's stone : [PHILOSOPHER'S STONE.] (4) To leave no stone unturned : To use all available or practicable means to effect an object; to omit or spare no exertions.