Richard Burton ric·hard·bur·ton uncommon noun 1. English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890) SynonymsBurtonRichard BurtonSir Richard BurtonSir Richard Francis Burton 2. Welsh film actor who often co-starred with Elizabeth Taylor (1925-1984) SynonymsBurtonRichard Burton Related words Broader terms actorexplorer WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.