keycard

noun — 2 senses

noun

Etymology From key (“lock opener”) + card (“piece of plastic”).

A usually plastic card which stores a digital signature that is used to operate an electronic access control lock.

noun

Etymology From key (“important”) + card (“playing card”).

Bridge, Games In Roman keycard Blackwood, an ace of any suit or the king of trumps.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.