What is (a) The palm of the hand. (b) The prominence of the palm above the base of the thumb; the thenar eminence; the ball of the thumb. Sometimes applied to the corresponding part of the foot called?

thenar — (a) The palm of the hand. (b) The prominence of the palm above the base of the thumb; the thenar eminence; the ball of the thumb. Sometimes applied to the corresponding part of the foot. (Webster's 1913.)

Sources