say it: BLAK-jak
blackjack is a noun and verb meaning "a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets". It carries 5 recorded senses.
a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets
a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
a gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21
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 blackjack come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.