| Idiom | Meaning | Example | 
| pinhead | 
one who does not use his brain, dipstick
 | 
"Who broke your glasses?" "Some pinhead sat on them!"
 | 
| pinko | 
a socialist; one who is not as red as a communist,
nor as white as a democrat
 | 
The pinkos want big business to pay for their social programs.
 | 
| pinpoint | 
locate the exact place or point, determine the time
 | 
Lawrence is trying to pinpoint the time of the plane crash.
 | 
| pins and needles | 
(See on pins and needles)
 | 
 | 
| pipe down | 
do not be so noisy, be quiet, keep it down
 | 
The teacher opened the door and said, "Pipe down, Grade 7."
 | 
| pipe dream | 
a dream based on luck, pie in the sky
 | 
Do you have a pipe dream or a plan? There's a big difference.
 | 
| pipes | 
voice, carry a tune
 | 
K.D. Lang has great pipes, eh.
 | 
| pipsqueak | 
tiny person, weak man, potlicker, wimp
 | 
Keith was a pipsqueak until he started lifting weights.
 | 
| pirate | 
steal, take someone else's property, bootleg, rabbit
 | 
His computer is loaded with pirated games and movies - all stolen.
 | 
| piss away [B] | 
waste, spend on liquor
 | 
He pissed away a lot of money when he was an alcoholic.
 |