'petroglyph' definitions:
Definition of 'petroglyph'
(from WordNet)
noun
A carving or line drawing on rock (especially one made by prehistoric people)
Definition of 'petroglyph'
From: GCIDE
- petroglyph \pet"ro*glyph`\ (p[e^]t"r[-o]*gl[i^]f`), n. A carving or drawing on rock, especially one made by prehistoric humans; called also a petrograph. [PJC]