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-raiser is a noun meaning "excitation that makes your hair stand up or that chills your bones". It carries one recorded sense.
excitation that makes your hair stand up or that chills your bones
“the movie was an old-fashioned hair-raiser”
Definitions, synonyms and semantic relations for hair-raiser come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.