It is the Latin pavo, German pfau.
"The English Language"
Robert Gordon Latham
Now, what bids for the 'Odontoglossum pavo.
"Allan and the Holy Flower"
H. Rider Haggard
There came a pause in the fierce race for "O. pavo," which I occupied in reducing seventeen hundred shillings to pounds sterling.
"Allan and the Holy Flower"
H. Rider Haggard