The plural form of pupusa. Pupusas originate from El Salvador and is this country's typical dish. The pupusa is a popular El Salvadoran dish made of a thick, corn tortilla filled with anything from meats to cheeses to refried beans to pork rinds. DELICIOUS!
It comes from the language of Spanish. It has two quite different meaning. The first being a mexican delicasy. The second is pussy. Note the emphazise on the u sound of the word.