1. Plural of hardpack; areas of compacted snow or ice that form a hard, crusty surface, especially on ski slopes or in winter terrain.
Usage: skiing and winter sports context; often used in plural form
2. Plural of hardpack; compacted or consolidated soil or earth, especially in arid regions.
Usage: geology and soil science context

Examples

• The ski resort reported hardpacks on the upper slopes after the freeze overnight.
• Skiers prefer powder to hardpacks because it offers better control.
• The desert region's hardpacks made it difficult for water to penetrate the ground.
• After several days of sun and wind, the fresh snow turned into hardpacks.
• Hikers found the hardpacks on the trail slippery and treacherous.
• The farmer struggled with the hardpacks in the field, which prevented proper drainage.