Слово "duty". Англо-русский словарь Мюллера

Thus necessity, like a gravitating power, would soon form our newly arrived emigrants into society, the reciprocal blessings of which, would supersede, and render the obligations of law and government unnecessary while they remained perfectly just to each other; but as nothing but heaven is impregnable to vice, it will unavoidably happen, that in proportion as they surmount the first difficulties of emigration, which bound them together in a common cause, they will begin to relax in their duty and attachment to each other; and this remissness, will point out the necessity, of establishing some form of government to supply the defect of moral virtue.

And Darya Alexandrovna plunged into the duties of the day, and drowned her grief in them for a time.

The sum involved, after death duties and expenses had been paid, would probably have come to something between five and ten thousand pounds net."  

If premiums were to be given to merchants, to build and employ in their service ships mounted with twenty, thirty, forty or fifty guns, (the premiums to be in proportion to the loss of bulk to the merchants) fifty or sixty of those ships, with a few guardships on constant duty, would keep up a sufficient navy, and that without burdening ourselves with the evil so loudly complained of in England, of suffering their fleet, in time of peace to lie rotting in the docks.

He beat up that crazy Chink yesterday in Bughouse Alley—when he was off duty, too.

“You know what the duties are of a medical officer in an infirmary.

'I may say,' added Mr Whitfield, with an air of enjoyment, 'that death duties would have been enormous.