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单词 keystone
释义

WordReference Random House Learner's Dictionary of American English © 2024
key•stone /ˈkiˌstoʊn/USA pronunciation   n. [countable]
  1. Buildingthe wedge-shaped piece at the top of an arch that holds the other pieces in place.
  2. something on which associated things depend;
    basis;
    foundation:the keystone of one's philosophy.

WordReference Random House Unabridged Dictionary of American English © 2024
key•stone  (kē′stōn′),USA pronunciation n. 
  1. Buildingthe wedge-shaped piece at the summit of an arch, regarded as holding the other pieces in place.
  2. something on which associated things depend:the keystone of one's philosophy.
  3. SportAlso called key′stone sack′. [Baseball Slang.]See second base (def. 1).
  • key1 + stone 1630–40
    • 2.See corresponding entry in Unabridged . basis, principle, foundation, linchpin.

Collins Concise English Dictionary © HarperCollins Publishers::
keystone /ˈkiːˌstəʊn/ n

  1. Also called: headstone, quoin the central stone at the top of an arch or the top stone of a dome or vault
  2. something that is necessary to connect or support a number of other related things
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更新时间：2024/9/22 4:17:40