Definitions

1. noun

A long, open container, especially one with sloping sides, used for holding food or drink for animals, or a depression in a surface, such as the ground, a road, or a cloud.

“The farmer filled the trough with fresh water for the cows.”

2. noun

A period of low prices, especially in the economy.

“The company struggled during the trough of the economic downturn.”

3. noun

A depression or hollow in a cloud, especially one that is associated with rain or thunderstorms.

“The weather forecast predicted a trough of low pressure moving across the country.”

4. verb

To move or go down, especially with a flowing or sliding motion.

“The water troughed down the slope of the hill.”

5. verb

To form a depression or hollow, especially in a cloud.

“The clouds troughed and released a heavy downpour of rain.”