Pollex

The Simiidae have a man-like appearance. They possess neither tails nor bestial cheek pouches. Their arms are longer than their legs, and they have opposable pollexes and a broad sternum.

Source: wiktionary

We came to know the curious roadside species, Hitchhiking Man, Homo pollex of science, with all its many sub-species and forms: […]

Source: wiktionary

Then there are the amateur carpenters. Poor, misguided devils. They bring purple thumbs back to work. Purple pollexes because they smashed the daylights out of their digits trying to drive four penny finishing nails into flimsy bits of moulding.

Source: wiktionary

Among the crabs with abnormal legs, one leg had two pollexes and three dactyls (Fig. 4B), one had a Y-shaped dactyl (Fig. 4C), two had clawlike dactyls (Fig. 4D), and the rest of the abnormal legs had a curved structure.

Source: wiktionary