Definition of key card in English:

key card

Syllabification: key card
(also card key)

noun

A small plastic card that can be used instead of a door key, bearing magnetically encoded data that can be read and processed by an electronic device.
More example sentences
  • When she reached the door she inserted the card key and pulled it back.
  • He watched as she swiped the card key through the security lock of the door.
  • Taking my purse, I stuffed into it my card key and plane ticket.

Definition of key card in:

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true