Plain English Meaning
What the pilot does to fix something that is going wrong with the aircraft's flight path or attitude.
Full Definition
A control input or procedural response made by the pilot to counter an undesired aircraft state, deviation, or sensory illusion and return the aircraft to the intended flight path or attitude.
Context Anchor
Seen in instrument flying and optical illusion discussions when a pilot must notice that what they see may be misleading and respond in a controlled, safe way.
Derivation
From Latin 'corrigere' meaning 'to make straight, set right.' In aviation, the action that 'sets right' a deviation from the intended flight path.