Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
deep-six is a verb meaning "toss out; get rid of". It carries 2 recorded senses.
throw from a boat
Definitions, synonyms and semantic relations for deep-six come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.