1. Sediment (sand, gravel, or silt) deposited by meltwater streams flowing from a glacier or ice sheet.
Usage: geology; plural form; also used as mass noun

1. Third-person singular present tense of 'outwash': to wash away or remove by the action of water.
Usage: rare; primarily technical or geological usage

Examples

• The outwashes from the melting glacier formed extensive plains across the valley.
• Geologists studied the composition of the outwashes to understand the ice sheet's history.
• The river outwashes sediment from the mountainous region downstream.
• Outwashes are commonly found in areas that were covered by glaciers during the last ice age.
• The outwashes deposited by glacial meltwater created fertile soil for agriculture.