Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
hair-shirt is an adjective meaning "self-sacrificing or austere". It carries one recorded sense.
self-sacrificing or austere
Definitions, synonyms and semantic relations for hair-shirt come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .