- (n.) The transverse section of a cyclonic area where the barometric pressure, neither rising nor falling, has reached its lowest point.
- (n.) Any channel, receptacle or depression, of a long and narrow shape; as, trough between two ridges, etc.
- (n.) A long, hollow vessel, generally for holding water or other liquid, especially one formed by excavating a log longitudinally on one side; a long tray; also, a wooden channel for conveying water, as to a mill wheel.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). trough. Retrieved September 20, 2026, from http://smartdefine.org/trough/definitions/2075099 |
| Chicago | Webster's. 2011. "trough" http://smartdefine.org/trough/definitions/2075099 (accessed September 20, 2026). |
| Harvard | Webster's 2011, trough, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/trough/definitions/2075099>. |
| MLA | Webster's. "trough" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/trough/definitions/2075099> |