keycard

名词 n.
中文释义

英文释义

名词 n.
  1. A usually plastic card which stores a digital signature that is used to operate an electronic access control lock.
  2. In Roman keycard Blackwood, an ace of any suit or the king of trumps.

词形变化

keycards plural key card alternative keycards plural key card alternative

词源

词源 1
From key (“lock opener”) + card (“piece of plastic”).
词源 2
From key (“important”) + card (“playing card”).
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