/ ˈtʃɪgə(r); NAmE / (also jig·ger / ˈdʒɪgə(r); NAmE /) noun
a small flea that lives in tropical regions and lays eggs under a person's or animal's skin, causing painful areas on the skin
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WORD ORIGIN
mid 18th cent.: variant of chigoe , from French chique , from a West African language.