An act of covering or concealing something.

Something that conceals or protects.

रक्षा करना

English Usage: The smut on the windows covered the view outside.

Hindi Usage: खिड़कियों पर लगे धब्बे बाहर के दृश्य को ढक देते थे।

To place something over or upon, as to protect or conceal.

ढकना

English Usage: She covered the food with a lid to keep it warm.

Hindi Usage: उसने खाने को ढकने के लिए ढक्कन लगा दिया।