noun🔗Share墙角石，隅石。 Any of the corner building blocks of a building, usually larger or more ornate than the surrounding blocks."The old courthouse had impressive quoins, large and decorative, at each corner, making it look very sturdy. "那座旧法院大楼的每个角落都有着气派的墙角石，又大又精美，让它看起来非常坚固。architecturebuildingmaterialpropertyChat with AIVocabulary GamePractice Reading
noun🔗Share拱石，拱顶石。 The keystone of an arch."The archway over the school's entrance was held together by prominent quoins, ensuring its structural integrity. "学校入口处的拱门由显眼的拱顶石固定，确保了其结构的完整性。architecturebuildingChat with AIVocabulary GamePractice Reading
noun🔗Share夹铁, 垫铁。 A metal wedge which fits into the space between the type and the edge of a chase, and is tightened to fix the metal type in place."The printer tightened the quoins around the type to prevent the letters from moving during the printing process. "印刷工拧紧了字框里的夹铁，以防止字母在印刷过程中移动。technicaltypemachineindustryChat with AIVocabulary GamePractice Reading
noun🔗Share垫木，楔木。 A form of wedge used to prevent casks from moving"The brewery worker carefully hammered the quoins into place around the barrel to keep it from rolling down the ramp. "啤酒厂工人小心地把垫木敲到位，固定住桶身，防止它从斜坡上滚下去。nauticalarchitectureChat with AIVocabulary GamePractice Reading
noun🔗Share垫木，楔子。 A wedge of wood or iron put under the breech of heavy guns or the muzzle of siege-mortars to raise them to the proper level."The artillery officer carefully adjusted the quoins beneath the cannon to angle it for the long-range shot. "炮兵军官小心地调整了炮身下的垫木，以便调整大炮的角度，进行远程射击。militaryweapontechnicalChat with AIVocabulary GamePractice Reading
