10 letters · 21 points in Scrabble
noun a carving or line drawing on rock (especially one made by prehistoric people)
originFrom French pétroglyphe, from Ancient Greek πέτρα (pétra, “rock”) + γλυφή (gluphḗ, “carved work”). By surface analysis, petro- + glyph.
Etymology from Wiktionary, CC BY-SA 3.0