a kind of thimble or protective sheath, as of leather or rubber, for the thumb
thumbstall in American English
(ˈθʌmˌstɔl)
noun
a protective sheath of rubber, leather, or the like for the thumb
Word origin
[1580–90; thumb + stall1]This word is first recorded in the period 1580–90. Other words that entered Englishat around the same time include: classical, cockpit, filibuster, humanist, piggyback