The Full Definition of Shadow
A shadow is a dark shape or area that appears on a surface when an object blocks light. it can mean a hidden or darker side of something or someone.
I got this shadow from my room which happens to be the shadow of the curtain of my door in my room when l was doing house chores..
And also this is the shadow of my Bag on my bedsheet on my Bed when l was Searching for something inside my Bag this morning. That is what shadow does