Holding in one's palm

держать [no Pf.] Na в ладоняхp to cup N in one's hands
Девочка держала в ладонях птенца. The little girl cupped a baby bird in her hands.
брать/взять чьи-то рукиa в свои ладониa to take someone's hand in both of one's own
NB The above phrase is used to describe an action performed in order to warm up someone's hand or to show sympathy, tenderness, etc.
насыпать/насыпать Na в ладониa to pour N into someone's hands
NB N denotes dry stuff only.