Trough

Trough may refer to:

In science

 * Trough (geology), a long depression less steep than a trench
 * Trough (meteorology), an elongated region of low atmospheric pressure
 * Trough (physics), the lowest point on a wave
 * Trough level (medicine), the lowest concentration of a medicine is present in the body over time
 * Langmuir-Blodgett trough, a laboratory instrument

In politics

 * Trough (economics), the lowest turning point of a business cycle
 * as metaphor for political corruption, in the contexts of crony capitalism, nepotism, and public economics

Other uses

 * Bread trough or dough trough, rectangular receptacle with a shallow basin, used in breadmaking
 * Trough (barony), a historical barony in County Monaghan, Ireland
 * Trough (food) or manger, a container for animal feed
 * Watering trough, a receptacle of drinking water for domestic and non-domestic livestock
 * Water trough, a trough used to supply water to steam locomotives.
 * Battle of the Trough, a 1756 skirmish of the French and Indian War in West Virginia
 * Sleightholme Beck Gorge - The Troughs, a Site of Special Scientific Interest in the Teesdale district of south-west County Durham, England
 * The Trough, a gorge carved by the South Branch Potomac River in West Virginia
 * "Down the trough", as used by Donegal Gaelic football club Cill Chartha
 * Trough, an old word for an inkwell