: to do the work of two people : to take on two roles doing double duty as cook and waiter.

How do you use double duty in a sentence?

The motorist has a double duty, to stop if the lights show red, but not to stop if he endangers vehicles behind him. In employment, as in immigration, we have a double duty. There is a double duty on the organisation to ensure that parents fully understand as well as the children.

What is mean of double?

1 : having a twofold relation or character : dual. 2 : consisting of two usually combined members or parts an egg with a double yolk. 3a : being twice as great or as many double the number of expected applicants. b of a coin : worth two of the specified amount a double eagle a double crown.