"jiggers" in the noun sense
1. shot glass, jigger, pony
a small glass adequate to hold a single swallow of whiskey
2. jiggermast, jigger
any small mast on a sailing vessel especially the mizzenmast of a yawl
3. harvest mite, chigger, jigger, redbug
larval mite that sucks the blood of vertebrates including human beings causing intense irritation
Source: WordNet® (An amazing lexical database of English)
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