jigger

noun

1. 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).
2. A measure of 1½ fluid ounces (approx. 44 ml) of liquor.
3. A drink of whiskey.
4. The sieve used in sorting or separating ore.
5. One who jigs; a miner who sorts or cleans ore by the process of jigging.
6. A horizontal lathe used in producing flatware.
7. A device used in the dyeing of cloth.
8. A pendulum rolling machine for slicking or graining leather.
9. A bicycle.
10. An automobile.
11. A golf club used to play low flying shots to the putting green from short distances.
12. A warehouse crane.
13. A 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.
14. A jiggermast.
15. A small fishing vessel, rigged like a yawl.
16. A device used by fishermen to set their nets under the ice of frozen lakes.
17. One who dances jigs; an odd-looking person.
18. A short board or plank inserted into a tree for a person to stand on while cutting off higher branches.
19. A placeholder name for any small mechanical device.
20. A railway jigger, a small motorized or human powered vehicle used by railway workers to traverse railway tracks.