We don't have synonyms for pollices yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are police, jollies and polices.
(n) :
The thumb; the first, or preaxial, digit of the forelimb, corresponding to the hallux in the hind limb. In birds, the pollex is the joint which bears the alula or bastard wing.
(n) :
The thumb; the first, or preaxial, digit of the forelimb, corresponding to the hallux in the hind limb. In birds, the pollex is the joint which bears the alula or bastard wing.