What is the meaning of Chigger?

A chigoe (Tunga penetrans), a kind of flea found in tropical climates.

A harvest mite (Trombiculidae spp.), a very small, red mite endemic to the Midwestern and Southeastern US, the infestation of which causes intense itching.

An East Asian person who behaves in ways similar to a stereotypical urban African American.

Source: wiktionary.org