Nightbreak is not a commonly used word, but it can refer to the breaking of night, or the onset of dawn. The IPA (International Phonetic Alphabet) transcription for nightbreak is /naɪt.brake/. The first syllable is pronounced as "nite" /naɪt/ with a long "i" sound. The second syllable is pronounced as "break" /breɪk/ with a long "a" sound. The word "nightbreak" is spelled using the combination of the words "night" and "break," with a double "t" in "night" and an "e" in "break" to signify the long "a" sound.