Oxygen 
To dream of oxygen embodies your existence, inner power, and artistic energy.
A dream involving a lack of oxygen represents your current state of suffocation and oppression.
Palace
To dream of a palace signifies fame and fortune. You have come to realize your true abilities and you will rise to your full potential.
To dream that you are the owner of a palace signifies attainable success.
Pelvis
To dream of your pelvis represents sexual urges and your male/female characteristics. You may be experiencing concerns in the area of ingenuity and self-expression.
Pepper
To dream of pepper suggests you need to 'spice up' your life and introduce variety. Alternatively, the dream signals that something is bothering or irritating you. The context of your dream may be pointing out the source of your annoyance.
Petals
To dream of petals represents a broken relationship or quarrel with a friend. It also symbolizes lament and remorse.
Pewter
To dream of vessels made of pewter suggests a preference for the old ways, and a reluctance to adapt to modern times.
Pickax
To dream of a pickax symbolizes your brutal sexual urges and hang ups. Let go of your inhibitions.
Picnic
To dream that you are at a picnic represents a happy and peaceful domestic life.
To dream of seeing a picnic basket hints of an opportunity to gain knowledge then impart your thoughts and insights to others.
Pigeon
To dream of a pigeon hints of your tendency to blame yourself for mistakes committed by other people. Pigeons are also closely linked to rumor or news. You might be yearning to come back home.
Pirate
To dream of a pirate signals the presence of some persons or situations creating discord to your emotional life. You may feel that someone has dishonored or attacked your creativity.
On the other hand, the pirate may symbolize liberty and a person who bravely goes against authority. You may be longing to explore new life voyages and riskier undertakings.