English edit

Etymology edit

Blend of key +‎ container, originally a trademark.

Noun edit

keytainer (plural keytainers)

  1. A small portable case for a person's keys.
    • 2005, Tony Hillerman, Rosemary Herbert, Sue Grafton, A New Omnibus of Crime, page 76:
      And in my mind I was looking at something else, a set of brand-new car keys in a keytainer stamped: “The Packard House,” upstairs, in a dead man's pocket.