Cover
Definition 1 of 6
Pro Tip 1/3
Physical concealment
Use 'cover' to talk about hiding or protecting something by putting it under another thing. He covered the leftover food with foil.
Pro Tip 2/3
Implicit protection
Something covered is often shielded from harm, like covering a wound. You should cover the cut to prevent infection.
Pro Tip 3/3
Disguise
Cover can mean to disguise something’s true appearance or nature. They covered the old walls with a fresh coat of paint.