jack
noun
uk/dʒæk/us/dʒæk/jacknoun(EQUIPMENT)
[C]
apieceofequipmentthat can beopenedslowlyunder aheavyobjectsuch as acarinordertoraiseit off theground:
起重器，千斤顶You need acarjack inordertochangeatyre.给汽车换轮子得用千斤顶。
DonNichols/iStock/Getty Images Plus/GettyImages
Machines - general words
- 3-D printer
- animatronic
- automated
- automation
- backhoe
- chuck
- coffee machine
- convenience
- crankshaft
- flywheel
- Heath Robinson
- hoist
- mill
- shredder
- supersensitivity
- tabulator
- teleprompter
- telerobotics
- touchless
- water cooler
jacknoun(CARD)
[C](alsoknave)
aplayingcardwith apictureof a man on it. It has alowervaluethan thecardsshowingakingorqueen:
（纸牌中的）J牌，杰克the jack ofclubs梅花杰克
eldadcarin/iStock/Getty Images Plus/GettyImages
Card games
- all in
- bidding
- blackjack
- bridge
- busted flush
- canasta
- card sharp
- deal
- diamond
- flush
- pass
- pool
- queen
- re-raise
- rebid
- recut
- rookie card
- solitaire
- spade
- straight
jacknoun(BALL)
[C]
asmallballtowards which otherballsarerolledorthrownin thegamesofbowlsorboules
（草地滚木球戏或法国式滚球戏中的）靶子球
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Bowls, bowling & croquet
- bisque
- boule
- bowl
- bowling
- bowling alley
- bowling ball
- bowling green
- croquet
- crown green bowls
- duckpin bowling
- end
- lawn bowling
- mallet
- skittle
- tenpin bowling
- tenpins
jacknoun(STAR-SHAPED OBJECT)
[Cusually plural]
asmallstar-shapedobjectused in thegameofjacks, in which youthrowaballinto theairandtrytopickup as many aspossibleof theseobjectswith the samehandbeforecatchingtheballagain
Joe_Potato/iStock/Getty Images Plus/GettyImages
Toys & dolls
- balloon
- beach ball
- chew toy
- doll's pram
- fidget
- fidget spinner
- finger puppet
- go-kart
- marble
- mud pie
- rag doll
- rocking horse
- snow globe
- sock puppet
- soft toy
- squirt gun
- squishy
- stacker
- teddy
- tricycle
jacknoun(GAME)
jacks
[U]
a children'sgamein which youthrowaballinto theairandtrytopickup as manysmallstar-shapedobjectsaspossiblewith the samehandbeforecatchingtheballagain
Jeffrey Coolidge/The Image Bank/GettyImages
Children's games
- dress-up box
- dressing-up box
- follow-my-leader
- French cricket
- go fish
- Hacky Sack
- hide-and-seek
- hopscotch
- leapfrog
- life
- musical chairs
- painting
- painting by numbersidiom
- peekaboo
- piggy in the middle
- piggyback
- Pokémon
- tag
- trick-or-treating
- warm
jacknoun(ELECTRICAL)
[C]
aconnectionbetween twopiecesofelectricalequipment
（电）插座，插口，塞孔Electrical switches & connections
- clicker
- coaxial
- corded
- dimmer
- dimmer switch
- junction box
- national grid
- outlet
- override
- patch
- pause
- plug
- plug(something)in/plug(something)intosomething
- plug-in
- powerbank
- putsomethingon
- spark plug
- switchboard
- terminal
- wire
jacknoun(NOTHING)
[U]slang(alsooffensiveslangjack shit,uk/ˌdʒæk ˈʃɪt/us/ˌdʒæk ˈʃɪt/)
nothing:
Iknowjack aboutfashion, but Iknowwhat I like towear.
There's jackshitto do here.