To knowingly ignore or disregard. Most often used as 'palmed' as in 'You just got palmed.' (referencing the 'Talk to the hand because the face ain't listening' gesture, in which the palm of the hand is pointed towards the speaker)
The embarrassment factor of being palmed is similar to that of being owned.
a part of your hand which most people dont know is a much better substitute for a fist when your hitting something. The reasons for this is because an open hand is more relaxed and is thus more powerful. It is also safer because the skin on your knuckles can split easily. You also have a smaller chance to break your fingers.