Covering

verb

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

   "He covered the baby with a blanket."

2. To be over or upon, as to conceal or protect.

   "The blanket covered the baby."

3. To be upon all of, so as to completely conceal.

   "Regular hexagons can cover the plane."

4. To set upon all of, so as to completely conceal.

   "You can cover the plane with regular hexagons."

5. To put on one's hat.