keystone

Từ điển WordNet v3.1 - WordNet Dictionary

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
• Syn:
anchor, mainstay, backbone, linchpin, lynchpin
• Derivationally related forms:
anchor (for: anchor)
• Hypernyms:
support
2. the central building block at the top of an arch or vault
• Syn:
key, headstone
• Hypernyms:
building block
• Hyponyms:
quoin, coign, coigne
• Part Holonyms:
arch

• Từ đồng nghĩa / Synonyms:
  key, headstone, anchor, mainstay, backbone, linchpin, lynchpin