The short thick digit of the human hand, next to the index finger and opposable to each of the other four digits, The part of a glove or mitten that covers the thumb, The shortest and thickest finger of the human hand; the pollex; the first digit of the hand, on the radial side, next to the index or forefinger, verb_ travel by getting free rides from motorists, look through a book or other written material, feel or handle with the fingers, transitive verb_ To handle awkwardly, To play with the thumbs, or with the thumbs and fingers, To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling; also, to cover with the thumb, intransitive verb_ To scan written matter by turning over pages with or as if with the thumb, To disarrange, soil, or wear by careless or frequent handling, To scan (written matter) by turning over pages with or as if with the thumb