1 definition by Danliv2003

Thumble

A portmanteu of thumb and stumble, works best when used with up or down to signify delight or disgust about a page using the Stumble Upon toolbar.

"dude, shit's cash, thumble up"

"ewww, no more Nailin' Palin for me, thumbled down"

by Danliv2003 November 5, 2008