Meaning

noun important for human and animal food; growth habit and stem form similar to Indian corn but having sawtooth-edged leaves

noun an offensive and insulting term for any Black African

originUltimately from Arabic كَفَّار (kaffār, “infidel”) or كَافِر (kāfir, “unbeliever”), both from كَفَرَ (kafara, “to cover, to hide”); in some (especially early) uses, via Spanish cafre, Dutch kaffer or other European languages. Doublet of kafir.

Etymology from Wiktionary, CC BY-SA 3.0