'Pollex' definitions:

Definition of 'pollex'

From: WordNet
noun
The thick short innermost digit of the forelimb [syn: thumb, pollex]

Definition of 'Pollex'

From: GCIDE
  • Pollex \Pol"lex\, n.; pl. Pollices. [the thumb.] (Anat.) 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. [1913 Webster]