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1. Being an enrolled member of a particular organization: a card-carrying Communist.
2. Avidly devoted to a group or cause: card-carrying fitness enthusiasts.
[From the assumption that such a person carries a membership card.]
(Government, Politics & Diplomacy) being an official member of a specified organization: a card-carrying union member; a card-carrying Communist.
1. admittedly belonging to a group or party: a card-carrying Communist.
2. identified with or dedicated to an ideal, profession, or interest: a card-carrying humanist.
Being a member of a particular political party or organization.