Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
call-back is a noun meaning "a return call". It carries 2 recorded senses.
a return call
the recall of an employee after a layoff
Definitions, synonyms and semantic relations for call-back come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.