Barnard, Christiaan
From Longman Dictionary of Contemporary EnglishBarnard, ChristiaanChristiaan BarnardBar‧nard, Chris‧ti‧aan /ˈbɑːnɑːd $ ˈbɑːrnɑːrd, ˈkrɪstiən/ (1922–2001) a South African doctor who in 1967 performed the first ever heart transplant (=an operation to take a heart from someone who has just died and put it into a living person)