To hold something in the palm of your hand is to possess it if only temporarily. Thus, one of the symbolism of the palm of the hand refers to ownership or power or control (have someone in the palm of your hand). However, the magician palms cards to create illusion, while the gambler does it to cheat. The dream may be related to a financial issue or situation.

Open palms, palms up show no deception or hostility; where else in the dream might it be expressed or hinted at? In physical and spiritual healing, the palms of the hands are senders and receivers of energy as in the laying on of hands, or in experiencing the safety or security of being in the palm of the hand of God.
See body, hand.