Grey/ɡreɪ/ Definition 1 of 7Pro Tip 1/2Color Variability The word 'grey' can describe a wide range of shades between black and white. The walls were painted a light grey, almost silvery. Pro Tip 2/2Weather Descriptions 'Grey' often refers to the sky's color, suggesting overcast or foggy conditions. A thick, grey mist covered the harbor, obscuring the boats.