chiggernoun [ C ]
uk/ˈtʃɪɡ.ər//-ɚ/also chigoe flea, /ˈtʃɪɡ.əʊ/, also jigger, uk/ˈdʒɪɡ.ər//-ɚ/a type of flea (= very small jumping insect) that lays eggs beneath an animal's or person's skin
US also harvest mite a type of mite (= very small animal similar to a spider) that lays eggs under an animal's or person's skin causing small red bumps that are very itchy (= you want to scratch them)