Plain English Meaning

When you go around from a landing, the airplane is still trimmed for slow approach flight. If you add full power without firmly pushing the nose down, the trim and the power together pitch the nose up so far that the wing stops flying and the airplane stalls.

Full Definition

A stall that can occur during a go-around or other high-power, low-airspeed situation when the airplane is trimmed nose-up for approach and the pilot fails to apply enough forward elevator pressure to counter the strong nose-up tendency caused by the trim setting combined with full power. If uncorrected, the nose pitches up steeply, airspeed decays, and the airplane stalls.