trough meaning and definition

TROUGH noun

Definition of trough (noun)

1. a narrow depression (as in the earth or between ocean waves or in the ocean bed)
2. a channel along the eaves or on the roof; collects and carries away rainwater
   • synonyms: gutter
3. a concave shape with an open top
   • synonyms: bowl
4. a treasury for government funds
   • synonyms: public treasury, till
5. a long narrow shallow receptacle
6. a container (usually in a barn or stable) from which cattle or horses feed
   • synonyms: manger