A sudden increase in cutting depth of a cutting tool due to an erratic change in load.
What does it mean when you dream about digging?
Digging in a dream may indicate a struggle to unearth one’s reputation or integrity, a search for something lost or buried, or an effort to bury some unpleasant aspect of the past. Any downward movement can also symbolize digging into the unconscious in an effort to understand oneself. (See also Shovel).
The interpretation of this behavior in a dream depends on your circumstances and on the details, which is true for most dreams. Digging is generally considered to be difficult work or hard labor. You could be “digging” around for the truth or trying to get to the bottom of things. Alternately, you could be “digging your own grave.” Therefore, consider your feelings in the dream and what you were digging. Were you working a difficult area, or digging in fertile soil?