keystone

[ˈki:stəʊn] [ˈkistoʊn]
  • 复数:keystones;
  • 相关单词 keystones
    例句
    柯林斯高阶英汉双解学习词典释义
    英英词典释义
    • Noun
      1. a central cohesive source of support and stability;
      "faith is his anchor""the keystone of campaign reform was the ban on soft money""he is the linchpin of this firm"
      2. the central building block at the top of an arch or vault
    行业词典
    • 体育: 根本原理;要旨;二垒;