Source : Webster's Revised Unabridged Dictionary (1913)

Thenal \The"nal\, Thenar \The"nar\, a. [NL., fr. Gr. ?.] (Anat.)
   Of or pertaining to the thenar; corresponding to thenar;
   palmar.

Thenar \The"nar\, n. (Anat.)
   (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.

Source : WordNet®

thenar
     adj : of or relating to the palm of the hand or to the area at the
           base of the thumb [syn: {thenal}]
     n 1: the fleshy area of the palm at the base of the thumb
     2: the inner surface of the hand from the wrist to the base of
        the fingers [syn: {palm}]