- a narrow depression (as in the earth or between ocean waves or in the ocean bed)
- gutter: a channel along the eaves or on the roof; collects and carries away rainwater
- bowl: a concave shape with an open top
- public treasury: a treasury for government funds
- a long narrow shallow receptacle
- manger: a container (usually in a barn or stable) from which cattle or horses feed
- In geology, a trough generally refers to a linear structural depression that extends laterally over a distance, while being less steep than a trench. A trough can be a narrow basin or a geologic rift. ...
- A trough is an elongated region of relatively low atmospheric pressure, often associated with fronts.
- A crest is the point on a wave with the maximum value or upward displacement within a cycle. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.Kinsman (1984) p. 38.
- The Trough is a large river gorge carved by the South Branch Potomac River situated in the Allegheny Mountains of Hampshire and Hardy Counties, West Virginia, USA. ...
- A long, narrow container, open on top, for feeding or watering animals; Any similarly shaped container; A gutter under the eaves of a building; an eaves trough; A short, narrow canal designed to hold water until it drains or evaporates; A long, narrow depression between waves or ridges; A ...
- The transition point between economic recession and recovery.
- An elongated area of relatively low atmospheric pressure.
- The bottom of a wave, the valley between the crests.
- Low pressure systems are areas, or closed systems, of low pressure and are also known as troughs and cyclones. Low pressure systems are associated with counter-clockwise rotating air, in which at the surface the air moves toward the center, and away from the center at high levels. ...
- High-temperature (180+) concentrator with one axis-tracking.
- The point in the business cycle when an economic contraction reaches its lowest level before turning up. Contrasts with peak.
- A deep path, full of ruts, between moguls.
- The minimum drug concentration in the blood, usually just before the next dose.
- A region,often the extension of a low,where air is mainly ascending,leading to rain,showers etc,and temporary deterioration.There are two types of trough frontal and air masses. ...
- A long and broad submarine DEPRESSION with gently sloping sides.
- The lowest part of the wave between successive crests.
- The part of an ocean wave that is displaced below the still water line.*
- The area of a diaper between the legs, especially in the middle and back. When standing, this area can form a pocket that can hold urine, even after the padding is saturated. Diapers designed for fecal incontinence have a deeper trough than those designed to hold urine only.
- A charting term, also known as a bottom (eg. in charting prices, a trough is the point where the price bottoms before the pressure to buy pushes it back up). (See also Peak).