Onions 
To dream of an onion indicates that you will be the focus of envy, malice, and resentment as a result of your accomplishments. It also suggests a series of layers you have to get through and ascertain regarding current concerns.
Eating an onion indicates conquering all adversaries, while seeing cooked onions implies slight expansion in business.
A dream that you are slicing onions suggests being won over by your enemies.
Orient
To dream of the orient suggests spiritual reform.
Oriole
To dream of an oriole suggests warmth. It may represent the sun, light, and gladness. Orioles may likewise represent the summer season.
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.