Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
horse-pistol is a noun meaning "a large pistol (usually in a holster) formerly carried by horsemen". It carries one recorded sense.
a large pistol (usually in a holster) formerly carried by horsemen
Definitions, synonyms and semantic relations for horse-pistol come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.