10 letters · 19 points in Scrabble
noun painting done in a range of tones of a single color
noun a black-and-white photograph or slide
adjective having or appearing to have only one color
originFrom Ancient Greek μονόχρωμος (monókhrōmos), from μόνος (mónos, “one”) + χρῶμα (khrôma, “color”); mono- + -chrome.
Etymology from Wiktionary, CC BY-SA 3.0