pet·ro·glyph (p t r -gl f )n. A carving or line drawing on rock, especially one made by prehistoric people. pet ro·glyphic adj. |
petroglyph [ˈpɛtrəˌglɪf]
n
(Earth Sciences / Palaeontology) a drawing or carving on rock, esp a prehistoric one
[via French from Greek petra stone + gluphē carving]
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