There are 2 definitions of jigger in English:

jigger1

Line breaks: jig¦ger
Pronunciation: /ˈdʒɪgə
 
/

noun

  • 1A machine or vehicle with a part that rocks or moves to and fro, e.g. a jigsaw: they invented a jigger that pulls nets under the ice
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    • The newly-diagnosed disease causes fingers to turn white and numb as a result of using hand-held vibrating tools such as pneumatic drills and jigger picks.
    • Machines called jiggers and jolleys are used to make tableware in ceramics factories.
    • With a working width of 4.5 meters, the HT jigger is the largest such dyeing unit installed in Italy.
  • 2A person who dances a jig.
  • 3A small sail set at the stern of a ship.
  • 3.1A small tackle consisting of a double and single block with a rope.
    More example sentences
    • What is needed is an incentive for fishers in New Zealand waters to use jiggers, a ban on trawling would do that.
    • And no squid is safe from the Seattle squid jiggers who flock to the docks at dusk and stay into the wee hours of the night, hoping to catch a few.
  • 4A measure or small glass of spirits or wine: a jigger or two of rum
    More example sentences
    • Require the use of jiggers or pre-measured dispensing systems, and buy high-quality shot glasses with pour lines marked on them.
    • One drink is one can of beer, one glass of wine, or one jigger of hard liquor.
    • Use a jigger or similar device to ensure that the amount of alcohol is consistent.
  • 5 informal A rest for a billiard cue.
  • 6 Golf, • dated A metal golf club with a narrow face.
    More example sentences
    • Clubs were named rather than numbered so I have jiggers, cleeks, mashies, spoons [and] mussel-backs all represented in the sculpture.
  • 7Canadian & NZ A small hand- or power-operated railway vehicle used by railway workers.
    More example sentences
    • I'm not taking a jigger to Wellingtown tomorrow.

verb

[with object] informal Back to top  
  • Rearrange or tamper with: conventional price indexes often jigger the market basket’s content
    More example sentences
    • Feldstein mentions some revenue-neutral tax jiggering that could be stimulative, but that sounds like fairly ordinary tax policy stuff to me.
    • That didn't stop them from paying $1.63 billion this week for Overture, a company whose specialty is selling the ability to jigger search results.
    • It says it wants 10 percent minority representation, and then they have to jigger the system to figure out how to reach that number.

Origin

mid 16th century (originally a slang word for a door): from the verb jig.

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Pronunciation: ˈtôrtē
noun
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There are 2 definitions of jigger in English:

jigger2

Line breaks: jig¦ger
Pronunciation: /ˈdʒɪgə
 
/

noun

More definitions of jigger

Definition of jigger in: