Dure -

"The dure is a type of collective laboring operation within small farming communities of Korea. Farmers in a village work together on each other's farms, so that they can support each other as reducing the amount of work. In accordance with region, its function and composition differ, so dure has been variously called such as nongsa (농사), nonggye (농계), nongcheong (농청), nongak (농악), nonggi (농기), mokcheong (목청), gyaksa (갹사), dongne nonmegi (동네논매기), gilssam (길쌈), dolgae gieum (돌개기음). It can also be a school name. - Wikipedia"