Definition of devoir:
"1885: Then quoth the portress to the mistress of the house, "O my lady, arise and go to thy place that I in turn may do my devoir."  Sir Richard Burton, The Book of the Thousand Nights and a Night, vol. 1"
Definition of devoir:
"1885: Then quoth the portress to the mistress of the house, "O my lady, arise and go to thy place that I in turn may do my devoir."  Sir Richard Burton, The Book of the Thousand Nights and a Night, vol. 1"