Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
slam-dunk is a verb meaning "make a forceful move against". It carries 2 recorded senses.
make a forceful move against
“the electronic travel market is slam-dunking traditional travel agencies”
Definitions, synonyms and semantic relations for slam-dunk come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.