Some sources claim the word coffee is derived from the Dutch koffie or the Italian caffe. In both cases, they find their origin in the Turkish kahveh, which in its turn stems from the Arabic qahwah, short for qahwat al-bun, that translates to the poetic wine of the bean.
Other research says that the name coffee originates from the Ethiopian region Kaffa, one of the historical homes of the plant. And as coffee is known as buno in that region, this story also brings us back to qahwat al-bun.
So, no matter what the true origin of the name is, next time you have a coffee, just enjoy your cup of heavenly wine of the bean.