Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
self-flagellation is a noun meaning "self-punishment inflicted by whipping". It carries one recorded sense.
self-punishment inflicted by whipping
Definitions, synonyms and semantic relations for self-flagellation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.