Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Language: French
Origin: Greek gyros 'ring, circle'; because it was originally used to show how the Earth turns

gyroscope

 noun
     
Related topics: Games, Transport
gy‧ro‧scope [countable]
TTDG a wheel that spins inside a frame and is used for keeping ships and aircraft steady. It can also be a child's toy.
—gyroscopic adjective
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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