| Piperaceae | Piperaceae |
| Piperales | Piperales |
| pipeta | pipette |
| pipi | wee-wee |
| Pipidae | Pipidae |
| Pipinidas | Pippinids |
| Pipistrellus hesperus | Western Pipistrelle |
| pipoca | popcorn |
| pipocaque | popcorngee |
| pique | bout |
| pique (arma) | pikeand-seek (children´s game) |
| pique (jogo) | hide-and-seek (children´s game) |
| pique-esconde | hide-and-seek |
| piquenique | picnic |
| piqueteiro | pickete (potato or beans and manioc flour) |
| piquiticu | boy |
| pira funerária | pyre |
| pirado | gaga |
| piraleno | pyralene |
| Pirambóia | South American lungfish |
| pirametro | pyredge (potato or beans and manioc flour) |
| piramidal | pyramidal |
| piranha | slut |
| piranha (peixe) | piranha |
| piranha (vulgar) | prostitute |
| Piranshahr | Piranshahr |
| Pirapora | Pirapora |
| Pirapora do Bom Jesus | Pirapora do Bom Jesus |
| pirar | burn |
| Pirarrãs | Pirahã people |
| pirata | corsair |
| pirata eletrônico(hacker) | crackergee |
| pirataetro | corsair |
| pirataria | piracy |
| piratariao | piracy |
| Piratas da Barbária | Barbary pirate |
| Piratas de Edelweiss | Edelweiss Pirates |
| piratear | pirate |
| Pirates of Silicon Valley | Pirates of Silicon Valley |
| Pirates of the Caribbean | Pirates of the Caribbean |
| Pirelli | Pirelli |
| Pireneus | Pyrenees |
| Pirenéus-Atlânticos | Pyrénées-Atlantiques |
| Pirenéus-Orientais | Pyrénées-Orientales |
| pires | saucer |
| piresmpoo | saucergee |
| Pireu | Piraeus |
| pirex | ovenware |
| pirexia | fever |
| Piri Reis | Piri Reis |
| pirilampo | firefly |
| pirilampoo | fireflygee |
| pirilau | willy |
| Pirineus Atlânticos | Pyrénées-Atlantiques |
| Pirineus Orientais | Pyrénées-Orientales |
| Pirinéus | Pyrenees |
| pirita | pyrites |
| Piriteiro | Crataegus |
| Pirk | Pirk |
| Pirkanmaa | Pirkanmaa |
| Pirkei Avot | Pirkei Avot |
| Pirmasens | Pirmasens |
| piroca | dick |
| pirocaisca | peter (vulgar)) |
| Pirofosfato de isopentenilo | Isopentenyl pyrophosphate |
| piromaníaca | pyromaniac |
| piromaníaco | pyromaniac |
| pirose | heartburn |
| piroso | tacky |
| pirotecnia | pyrotechnics |
| Pirotério | Pyrotherium |
