say it: PEH-troh-glif
petroglyph is a noun meaning "a carving or line drawing on rock (especially one made by prehistoric people)". It carries one recorded sense.
a carving or line drawing on rock (especially one made by prehistoric people)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for petroglyph come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.