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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.

The second digit, that next pollex, in the manus, or hand; the forefinger; index finger.

An extra first digit, or rudiment of a digit, on the preaxial side of the pollex.

igit of the human hand, differing from the other fingers in having but two phalanges; the pollex. See Pollex. Upon his thumb he had of gold a ring. Chaucer. Thumb band, a twist of anything as thick as the thumb. Mortimer. -- Thumb blue, indigo in the form of small balls or lumps, used by washerwomen to blue linen, and…