Definition of chigger noun from the Oxford Advanced American Dictionary

 

chigger

 noun
noun
NAmE//ˈtʃɪɡər//
 
(also jigger)
 
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a small flea (= a type of very small insect) that lays eggs under a person's or animal's skin, causing painful areas on the skin
See the Oxford Advanced Learner's Dictionary entry: chigger