Definition
A flight instrument that uses a spinning gyroscope to display the aircraft's pitch (nose up or down) and bank (wings tilted left or right) relative to the natural horizon. It presents this information on a fixed reference symbol representing the aircraft against a movable horizon line, allowing the pilot to control attitude without seeing outside.
Plain English
An instrument that shows the pilot whether the nose is pointing up or down and whether the wings are level or tilted, by using a spinning wheel inside that stays steady while the aircraft moves around it.
Context Anchor
Seen in instrument flying discussions and in older descriptions of the attitude indicator, especially when explaining how pilots control the airplane without relying on the outside horizon.
Derivation
Gyroscopic comes from the Greek 'gyros' (circle) and 'skopein' (to look at) -- literally 'a thing that watches a turn.' A spinning gyroscope resists changes to its orientation, so it can be used as a stable reference while the aircraft pitches and rolls around it.
Why Pilots Care
It supplies continuous attitude reference when outside visual cues are lost, enabling controlled flight in instrument conditions.
Intuition Check
Pitch here does not mean a sound, and bank does not mean a financial bank or the side of a river. In this term, pitch means nose up or nose down, and bank means the wings tilted left or right.
Example Sentence 1
As the aircraft entered the clouds, the pilot's scan shifted to the gyroscopic pitch-and-bank indicator to keep the wings level.
Example Sentence 2
After entering the cloud layer, the gyroscopic pitch-and-bank indicator became the primary reference for maintaining straight-and-level flight.