Plow ‧ right, Joan /ˈplaʊraɪt, dʒəʊn/ BrE AmE
(1929–) a British actress who began in theatre and moved into films. She acted in The Entertainer , Equus , and Drowning by Numbers . She is the ↑ widow of the actor Laurence Olivier. Her official title is Dame Joan Plowright.