shadowshadow /ˈʃædoʊ/ noun 
► shadow
► shadow a dark shape on a surface, made when someone or something blocks the light: A shadow fell across the table and I looked up to see who was there. It was late in the afternoon, and the shadows of the trees had become long.
► shade an area that is cooler and darker because the light of the sun does not reach it: We sat outside in the shade, under a tree.
► silhouette a dark shape that you see against a light background. When you see the silhouette of something, you see a dark shape without any details or features: I saw the silhouette of a bird in the pale sky.