n. (pl. -ies)
1. a a moral or legal obligation; a responsibility (his duty to report it). b the binding force of what is right (strong sense of duty). c what is required of one (do one's duty).
2 payment to the public revenue, esp.: a that levied on the import, export, manufacture, or sale of goods (customs duty). b that levied on the transfer of property, licences, the legal recognition of documents, etc. (death duty; probate duty).
3 a job or function (his duties as caretaker).
4 the behaviour due to a superior; deference, respect.
5 the measure of an engine's effectiveness in units of work done per unit of fuel.
6 Eccl. the performance of church services.
Phrases and idioms:
do duty for serve as or pass for (something else). duty-bound obliged by duty. duty-free (of goods) on which duty is not leviable. duty-free shop a shop at an airport etc. at which duty-free goods can be bought. duty-officer the officer currently on duty. duty-paid (of goods) on which duty has been paid. duty visit a visit paid from obligation, not from pleasure. on (or off) duty engaged (or not engaged) in one's work.
Etymology: AF dewet{eacute}, duet{eacute} (as DUE)