|the innermost digit of the forelimb; thumb.|
|the first or innermost digit of the foot of humans and other primates or of the hind foot of other mammals; great toe; big toe.|
rubefacient ru·be·fa·cient (r&oomacr;'bə-fā'shənt)
Producing redness, as of the skin. n.
A substance that irritates the skin, causing redness.