Definition of chigger noun from the Oxford Advanced Learner's Dictionary

 

chigger

 noun
(also jigger)noun
BrE BrE//ˈtʃɪɡə(r)//
 
; NAmE NAmE//ˈtʃɪɡər//
 
; BrE also BrE//ˈdʒɪɡə(r)//
 
Invertebrates
 
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a small flea that lives in tropical regions and lays eggs under a person’s or an animal’s skin, causing painful areas on the skin See related entries: Invertebrates Word Origin mid 18th cent.: variant of chigoe, from French chique, from a West African language.
See the Oxford Advanced American Dictionary entry: chigger