'Devoir' definitions:

Definition of 'devoir'

From: WordNet
noun
Formal expression of respect

Definition of 'Devoir'

From: GCIDE
  • Devoir \De*voir"\, n. [F., fr. L. debere to owe. See Due.] Duty; service owed; hence, due act of civility or respect; -- now usually in the plural; as, they paid their devoirs to the ladies. "Do now your devoid, young knights!" --Chaucer. [1913 Webster]