Plain English Meaning
A slow, steep-feeling descent flown just above stall speed, with the engine helping to control how fast you come down, used when you need to clear an obstacle and land in a short space.
Full Definition
A nose-high, power-assisted descent flown at the lowest airspeed that still provides safe handling and controllability, used to clear obstacles on approach to a short or restricted landing area. The airplane is configured with full flaps, power is used to control the rate of descent, and pitch attitude is used to maintain the slow target airspeed.