Sentence:  Michelangelo found the rabbi in the room of study , a gentle old man with a <WSD>white</WSD> beard and luminous grey eyes , robed in black gabardine with a skullcap on his head . 
Meaning of the word marked with <WSD> tags:  being of the achromatic color of maximum lightness; having little or no hue owing to reflection of almost all incident light