Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
post-horse is a noun meaning "a horse kept at an inn or post house for use by mail carriers or for rent to travelers". It carries one recorded sense.
a horse kept at an inn or post house for use by mail carriers or for rent to travelers
Definitions, synonyms and semantic relations for post-horse come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.