1. to cover with a hard coating or layer
2. to form a crust on the surface of something

Examples

• Barnacles encrusted the old ship’s hull.
• Salt water had encrusted the metal pipes.
• The jeweler encrusted the crown with diamonds.
• Ice encrusted the windshield overnight.
• Years of neglect allowed rust to encrust the machinery.
• The cave walls were encrusted with mineral deposits.
• Mud encrusted his boots after the hike.