Baring the palm is an idiomatic expression that means to display the open palm of one's hand, often as a gesture of sincerity or openness. Synonyms for this phrase include "showing one's hand," "revealing one's intentions," and "exposing one's true feelings." Other similar expressions might include "laying all one's cards on the table" or "unveiling one's true self." Ultimately, the idea behind all of these phrases is to be honest and transparent with others, to let them see the real you without any hidden agendas or ulterior motives. So whether you bare the palm or show your hand, remember that honesty is always the best policy.