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.
1. (Mil.) A wooden flat-bottomed boat, a metallic cylinder, or a frame covered with canvas, India rubber, etc., forming a portable float, used in building bridges quickly for the passage of troops. 2. (Naut.) A low, f...
