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jigger
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As a noun, jigger means a double-ended vessel, generally of stainless steel or other metal, one end of which typically measures 1½ fluid ounces (approx. 44 ml), the other typically 1 fluid ounce (approx. 30 ml). As a verb, it means alter or adjust, particularly in ways not originally intended.
Meanings of jigger
32 meaningsnoun
USA double-ended vessel, generally of stainless steel or other metal, one end of which typically measures 1½ fluid ounces (approx. 44 ml), the other typically 1 fluid ounce (approx. 30 ml).
USA measure of 1½ fluid ounces (approx. 44 ml) of liquor.
USslangA drink of whisky.
miningThe sieve used in sorting or separating ore.
miningOne who jigs; a miner who sorts or cleans ore by the process of jigging.
potteryA horizontal lathe used in producing flatware.
textilesA device used in the dyeing of cloth.
A pendulum rolling machine for slicking or graining leather.
A warehouse crane.
nauticalA light tackle, consisting of a double and single block and the fall, used for various purposes, as to increase the purchase on a topsail sheet in hauling it home; the watch tackle.
nauticalA jiggermast.
nauticalNew EnglandA small fishing vessel, rigged like a yawl.
fishingA device used by fishermen to set their nets under the ice of frozen lakes.
New ZealandA short board or plank inserted into a tree for a person to stand on while cutting off higher branches.
Older and rare meanings (5)
UKslangdatedA bicycle.
golfdatedA golf club used to play low flying shots to the putting green from short distances.
archaicOne who dances jigs; an odd-looking person.
archaicA streetcar drawn by a single horse.
archaicA kind of early electric cash register.
verb
To alter or adjust, particularly in ways not originally intended.
“You'll have to jigger it from the original specifications to get it to work.”
potteryTo use a jigger.
To move, send, or drive with a jerk; to jerk; also, to drive or send over with a jerk, as a golf ball.
Older and rare meanings (2)
slangobsoleteTo imprison.
slangarchaicTo confound; to damn.
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).