Definition
Also known as a "lateral hazard", this can be a water hazard, tall grass, a creek, or other unplayable spots on the course where the golfer takes one penalty stroke and drops next to where it went in the hazard. Compared to out-of-bounds, this is a less penalizing type of hazard because you are only taking an extra stroke, not stroke and distance.
Usage
Is this tall fescue grass a red hazard?