jigger

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jigger:

see chigoechigoe
or jigger,
small parasitic flea (Tunga penetrans) of the tropics and subtropics, including the S United States. Humans and their domestic animals are the main hosts.
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jigger

[′jig·ər]
(mining engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

jigger

1. Golf an iron, now obsolete, with a thin blade, used for hitting long shots from a bare lie
2. any of a number of mechanical devices having a vibratory or jerking motion
3. a light lifting tackle used on ships
4. a small glass, esp for whisky, with a capacity of about one and a half ounces
5. Engineering a type of hydraulic lift in which a hydraulic ram operates the lift through a block and tackle which increases the length of the stroke
6. Canadian a device used when setting a gill net beneath ice
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005