Pollex
Pronunciation : Pol"lex
Part of Speech : n.;
Etymology : [L., the thumb.] (Anat.)
Definition : Defn: The first, or preaxial, digit of the fore limb, corresponding to the hallux in the hind limb; the thumb. In birds, the pollex is the joint which bears the bastard wing.
pl. Pollices.
Source : Webster's Unabridged Dictionary, 1913