Dictionary.com

blackjack

[ blak-jak ]
/ ˈblækˌdʒæk /
Save This Word!

noun
verb (used with object)
to strike or beat with a blackjack.
to compel by threat.
QUIZ
CUDDLE UP! A COZY QUIZ ON FALL WORDS HAS ARRIVED
If autumn is your ideal season, spice up your repertoire of "fall" vocabulary with this quiz on some warm and vivid descriptive words for the season.
Question 1 of 10
Which of the following words means “to make a crackling sound; crackle”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of blackjack

First recorded in 1505–15; black + jack1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use blackjack in a sentence

British Dictionary definitions for blackjack (1 of 5)

blackjack1
/ (ˈblækˌdʒæk) mainly US and Canadian /

noun
a truncheon of leather-covered lead with a flexible shaft
verb
(tr) to hit with or as if with a blackjack
(tr) to compel (a person) by threats

Word Origin for blackjack

C19: from black + jack 1 (implement)

British Dictionary definitions for blackjack (2 of 5)

blackjack2
/ (ˈblækˌdʒæk) /

noun cards
pontoon or any of various similar card games
the ace of spades

Word Origin for blackjack

C20: from black + jack 1 (the knave)

British Dictionary definitions for blackjack (3 of 5)

blackjack3
/ (ˈblækˌdʒæk) /

noun
a dark iron-rich variety of the mineral sphalerite

Word Origin for blackjack

C18: from black + jack 1 (originally a miner's name for this useless ore)

British Dictionary definitions for blackjack (4 of 5)

blackjack4
/ (ˈblækˌdʒæk) /

noun
a small oak tree, Quercus marilandica, of the southeastern US, with blackish bark and fan-shaped leavesAlso called: blackjack oak

Word Origin for blackjack

C19: from black + jack 1 (from the proper name, popularly used in many plant names)

British Dictionary definitions for blackjack (5 of 5)

blackjack5
/ (ˈblækˌdʒæk) /

noun
a tarred leather tankard or jug

Word Origin for blackjack

C16: from black + jack ³
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK