1. ridges of hard snow formed by wind erosion, typically found in polar regions
Usage: geological; plural form

Examples

• The Antarctic explorers had to navigate carefully around the sharp sastrugi.
• Wind-carved sastrugi made the sledding expedition extremely difficult.
• The sastrugi created a treacherous landscape of frozen ridges and valleys.
• Polar researchers study sastrugi to understand wind patterns in Antarctica.
• The team’s progress was slowed by the maze of sastrugi blocking their path.
• Sastrugi can reach heights of several feet in areas with strong prevailing winds.