Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
write-in is a noun meaning "a candidate for public office whose name does not appear on the ballot and so must be written on the ballot by the voters". It carries 2 recorded senses.
a candidate for public office whose name does not appear on the ballot and so must be written on the ballot by the voters
a vote cast by writing in the name of a candidate who is not listed on the ballot
Definitions, synonyms and semantic relations for write-in come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.