Devoir

n.

1.

Duty; service owed; hence, due act of civility or respect; - now usually in the plural; as, they paid their devoirs to the ladies.

Noun

1.

devoir - formal expression of respect

DEVOIR. Duty. It is used in the statute of 2 Ric. II., c. 3, in the sense of duties or customs.

civility, politeness