BLACKJACK

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 Dictionary entry overview: What does blackjack mean? 

• BLACKJACK (noun)
  The noun BLACKJACK has 4 senses:

1. 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

2. a piece of metal covered by leather with a flexible handle; used for hitting people

3. a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship

4. 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

  Familiarity information: BLACKJACK used as a noun is uncommon.

• BLACKJACK (verb)
  The verb BLACKJACK has 1 sense:

1. exert pressure on someone through threats

  Familiarity information: BLACKJACK used as a verb is very rare.

 Dictionary entry details 

• BLACKJACK (noun)

Sense 1

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

Classified under:

Nouns denoting plants

Synonyms:

blackjack; blackjack oak; jack oak; Quercus marilandica

Hypernyms ("blackjack" is a kind of...):

scrub oak (any of various chiefly American small shrubby oaks often a dominant form on thin dry soils sometimes forming dense thickets)

Sense 2

Meaning:

A piece of metal covered by leather with a flexible handle; used for hitting people

Classified under:

Nouns denoting man-made objects

Synonyms:

blackjack; cosh; sap

Hypernyms ("blackjack" is a kind of...):

bludgeon (a club used as a weapon)

Sense 3

Meaning:

A flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship

Classified under:

Nouns denoting man-made objects

Synonyms:

black flag; blackjack; Jolly Roger; pirate flag

Hypernyms ("blackjack" is a kind of...):

flag (emblem usually consisting of a rectangular piece of cloth of distinctive design)

Meronyms (parts of "blackjack"):

skull and crossbones (emblem warning of danger or death)

Sense 4

Meaning:

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

Classified under:

Nouns denoting acts or actions

Synonyms:

blackjack; twenty-one; vingt-et-un

Hypernyms ("blackjack" is a kind of...):

card game; cards (a game played with playing cards)

• BLACKJACK (verb)

Sense 1

Meaning:

Exert pressure on someone through threats

Classified under:

Verbs of political and social activities and events

Synonyms:

blackjack; blackmail; pressure

Hypernyms (to "blackjack" is one way to...):

act upon; influence; work (have and exert influence or effect)

Sentence frame:

Somebody ----s somebody

 Context examples 

“On we went then,” said Aylward, after a long pull at his blackjack.

(The White Company, by Sir Arthur Conan Doyle)

At every man's elbow stood his leathern blackjack of beer, while at the further end a hogshead with its end knocked in promised an abundant supply for the future.

(The White Company, by Sir Arthur Conan Doyle)