donor card is a noun meaning "a card that you carry on your person and that authorizes the use of your organs for transplantation after your death". It carries one recorded sense.
a card that you carry on your person and that authorizes the use of your organs for transplantation after your death
Definitions, synonyms and semantic relations for donor card come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.