thumber noun2 •One who thumbs (a book, one's nose, etc.).Dylan Thomas was another thesaurus thumber, and in his work too the words it supplied were not always improvements. — 2008 •One who thumbs a lift; a hitchhiker.Several months ago every city and many of the towns in which we operate were flooded with a cartoon flyer warning autoists of the legal risks involved in picking up thumbers. — 1932 formsthumbers
