a legendary king of the Britons in the sixth century ad, who led Celtic resistance against the Saxons: possibly based on a historical figure; represented as leader of the Knights of the Round Table at Camelot
Chester Alan. 1830–86, 21st president of the US (1881–85)
(Austral & NZ, informal) not know whether one is Arthur or Martha, to be in a state of confusion
masc. proper name, from M.L. Arthurus/Arturus, from Welsh arth "bear," cognate with Gk. arktos, L. ursus (see Arctic). Arthurian "pertaining to the series of tales of British King Arthur and his knights, is first attested 1853.