subs. (stable).See quot.
c. 1880. The Sporting Times [A Dictionary of Slang, Jargon & Cant]. One gentleman I came across had a way of finding out the cussedness of this or that animal by a method that I found to be not entirely his own. The tongue is inserted in the left cheek and forced through the lips, producing a peculiarly squashy noise that is extremely irritating. It is termed, I believe, a RASPBERRY, and when not employed for the purpose of testing horseflesh, is regarded rather as an expression of contempt than of admiration.