- partner in crime
- partner relation
- power couple
- packsaddle
- prostheon
- plantain tree
- passementerie
- Pitot_static tube
- pelvimeter
- piezometer
- potentiometer
- Pitot head
- planimeter
- prepossessing
- perplexing
- plane ticket
- price support
- pterocles alchata
- pina colada
- pillow talk
- plaster cutting saw
- plaster bed
- plasterwork
- pinus flexilis
- pinot noir
- percussor
- percussion— (as a gun)
- ps
- proliferation
- pullulation
- postsphygmic period
- palomino
- post horse
- pinto
- post_horse
- protohippus
- polo pony
- Platonic year
- prehistoric culture
- paste of zinc oxide and salicylic acid
- pin curl
- pin feed platen
- pintail
- prefix operator
- prefix notation
- postfix notation
- prefix code
- pincurl clip
- postulator
- phase in
