do one's duty


1

Do one's tasks or what is expected of one. For example, He was only doing his duty when he made the children finish their work. [Early 1500s]

2

Defecate or urinate, as in Please keep the dog outdoors until he does his duty. This euphemism for attending to such needs is heard less often today. [1930s]

QUIZZES

IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?

Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.