Meaning & Definition of word "Trough"

noun:

• 1. A long, narrow open container for animals to eat or drink from.
  • Example: The farmer filled the trough with fresh water for the pigs.
• 2. A channel or depression, particularly one where water collects.
  • Example: The rainwater flowed down into the trough formed by the drainage system.
• 3. A low point in a wave or a fluctuating condition.
  • Example: The stock market reached a trough before beginning to rise again.
• 4. In meteorology, a low-pressure area in a weather pattern.
  • Example: The trough in the atmosphere brought cooler temperatures and rain.