1) On a losing streak 
Slumping is a technique in which items are made in a kiln by means of shaping glass over molds at high temperatures. The slumping of a pyrometric cone is often used to measure temperature in a kiln. == Technique == Slumping glass is a highly technical operation that is subject to many variations, both controlled and uncontrolled. When an item is b...
• (p. pr. & vb. n.) of Slump
Method of shaping glass by heating in a furnace until it melts enough to sag over a former
A landslide that results from the downward sliding of rock debris as a single mass, usually with a backward rotation relative to the slope along which the movement takes place.