blackjack

[blak-jak]
noun
1.
a short, leather-covered club, consisting of a heavy head on a flexible handle, used as a weapon.
2.
Cards.
a.
twenty-one ( def 4 ).
b.
Also called natural. (in twenty-one) an ace together with a ten or a face card as the first two cards dealt.
c.
a variety of twenty-one in which any player can become dealer.
3.
black flag ( defs 1, 2 ).
4.
a small oak, Quercus marilandica, of the eastern U.S., having a nearly black bark and a wood of little value except for fuel.
5.
a large drinking cup or jug for beer, ale, etc., originally made of leather coated externally with tar. Compare bombard ( def 7 ).
6.
caramel or burnt sugar for coloring spirits, vinegar, coffee, etc.
7.
Mineralogy. a dark, iron-rich variety of sphalerite.
verb (used with object)
8.
to strike or beat with a blackjack.
9.
to compel by threat.

Origin:
1505–15; black + jack1

Dictionary.com Unabridged

Pershing

[pur-shing or for 2, -zhing]
noun
1.
John Joseph ("Blackjack") 1860–1948, U.S. general: commander of the American Expeditionary Forces in World War I.
2.
Military.
a.
a 46-ton (42 metric tons) U.S. heavy tank of 1944–52, with a five-man crew and a 90mm gun.
b.
a two-stage surface-to-surface ballistic missile.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To blackjack
Collins
World English Dictionary
blackjack1 (ˈblækˌdʒæk)
 
n
1.  a truncheon of leather-covered lead with a flexible shaft
 
vb
2.  (tr) to hit with or as if with a blackjack
3.  (tr) to compel (a person) by threats
 
[C19: from black + jack1 (implement)]

blackjack2 (ˈblækˌdʒæk)
 
n
1.  pontoon or any of various similar card games
2.  the ace of spades
 
[C20: from black + jack1 (the knave)]

blackjack3 (ˈblækˌdʒæk)
 
n
a dark iron-rich variety of the mineral sphalerite
 
[C18: from black + jack1 (originally a miner's name for this useless ore)]

blackjack4 (ˈblækˌdʒæk)
 
n
Also called: blackjack oak a small oak tree, Quercus marilandica, of the southeastern US, with blackish bark and fan-shaped leaves
 
[C19: from black + jack1 (from the proper name, popularly used in many plant names)]

blackjack5 (ˈblækˌdʒæk)
 
n
a tarred leather tankard or jug
 
[C16: from black + jack³]

Pershing1 (ˈpɜːʃɪŋ)
 
n
John Joseph, nickname Black Jack. 1860--1948, US general. He was commander in chief of the American Expeditionary Force in Europe (1917--19)

Pershing2
 
n
a US ballistic missile capable of carrying a nuclear or conventional warhead

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

blackjack
used in many senses since 16c., earliest is possibly "tar-coated leather jug for beer" (1590s), from black + jack in any of its many slang senses. The weapon so called from 1889; the card game by 1910.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences for blackjack
This is how counting cards really works, when playing the game of blackjack.
Many casinos offer optional side bets at standard blackjack tables.
These side bets invariably offer worse odds than wellplayed blackjack.
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