Where does “pajzsa” come from?

pajzsa (Hungarian) comes from Hungarian pajzs, from Italian pavese, from Italian Pavia, from Latin Papia, from Portuguese papear, from Portuguese papo, from Portuguese papar, from Old Portuguese papar — I eat, eat pap.

Ancestry of “pajzsa”, step by step

Step	Language	Word	Meaning
1	Hungarian	pajzs	shield
2	Italian	pavese	Native or inhabitant of Pavia; Of or pertaining...
3	Italian	Pavia	—
4	Latin	Papia	—
5	Portuguese	papear	to chat, to chatter, to babble
6	Portuguese	papo	crop; stomach; goitre
7	Portuguese	papar	to eat
8	Old Portuguese	papar	—
9	Latin	pappo	I eat, eat pap

Every word from Latin pappo →Every word from Old Portuguese papar →Every word from Portuguese papar →