Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rupestral is an adjective meaning "composed of or inscribed on rock". It carries one recorded sense.
composed of or inscribed on rock
“rupestral drawings in the caves of Northern Spain”
Definitions, synonyms and semantic relations for rupestral come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.