Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
blackbeard is a noun meaning "an English pirate who operated in the Caribbean and off the Atlantic coast of North America (died in 1718)". It carries one recorded sense.
an English pirate who operated in the Caribbean and off the Atlantic coast of North America (died in 1718)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for blackbeard come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.