1. the channel or bottom of a stream where water flows or has flowed

Examples

• The dry streambed showed evidence of recent flooding.
• Smooth rocks lined the shallow streambed.
• Fish spawned in the gravel of the streambed.
• Heavy rains carved a new path in the streambed.
• Wildflowers grew along the edges of the old streambed.
• The geologist studied sediment layers in the streambed.