1. plural of backshore; the part of a beach or shore that lies behind the foreshore and is only reached by the highest tides or storm waves.
Usage: coastal geography term; often used in plural form

Examples

• The backshores of the island are covered with driftwood and seaweed deposited by winter storms.
• Coastal erosion has significantly altered the backshores along this stretch of the Atlantic coast.
• The backshores remain relatively undisturbed except during the highest spring tides.
• Scientists study the backshores to understand long-term changes in beach morphology.
• Vegetation on the backshores provides habitat for nesting birds and small mammals.