The crossword solution for the term 'ROCK ON THE EDGE' is TEETER, which is a 6 letter word. TEETER means to move unsteadily from side to side, or to sway back and forth. This phrase can be used to describe a situation that is on the brink of something, or when someone is in a precarious position. In this context, it could refer to a rock that is on the edge of a cliff, or a person who is on the edge of making a risky decision.