1911 Encyclopædia Britannica (1911)
“ In sporting phraseology the whole paw of a fox or other beast of chase is called the “pad.” A special technical use, somewhat difficult to connect with the above meanings, is for the socket of a brace or for the handle of such tools as a keyhole saw. (2) The canting word “pad,” now surviving in such words as “footpad,” a highway robber, or “pad horse,” a roadster riding-horse with an easy action, is the same as “path,” adapted directly from the Low Ger. ”
