Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
send-off is a noun meaning "an organized expression of goodwill at the start of a trip or new venture". It carries 2 recorded senses.
an organized expression of goodwill at the start of a trip or new venture
Definitions, synonyms and semantic relations for send-off come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.