Blackwood is a surname of English origin.
Notable bearers include Algernon Blackwood, the British writer of supernatural fiction, and Easley Blackwood, the American composer and bridge expert who refined the bidding convention that bears his name. (Lowercase blackwood refers to dark-wooded trees or the bridge convention.)
1. bridge — convention, Agreed standard of behavior; bidding (Offering prices or obeying); aces (Highest-ranked cards); kings (Male hereditary rulers); slam · response · partner · contract · expert
2. surname — Algernon, British masculine given name; British (Of the United Kingdom); American (From the U.S.); writer (Creator of texts); author · composer · pianist · theorist · supernatural · horror · fiction · ghost · stories